Answer:
// here is code in c++ to find the approx value of "e".
#include <bits/stdc++.h>
using namespace std;
// function to find factorial of a number
double fact(int n){
double f =1.0;
// if n=0 then return 1
if(n==0)
return 1;
for(int a=1;a<=n;++a)
f = f *a;
// return the factorial of number
return f;
}
// driver function
int main()
{
// variable
int n;
double sum=0;
cout<<"enter n:";
// read the value of n
cin>>n;
// Calculate the sum of the series
for (int x = 0; x <= n; x++)
{
sum += 1.0/fact(x);
}
// print the approx value of "e"
cout<<"Approx Value of e is: "<<sum<<endl;
return 0;
}
Explanation:
Read the value of "n" from user. Declare and initialize variable "sum" to store the sum of series.Create a function to Calculate the factorial of a given number. Calculate the sum of all the term of the series 1+1/1!+1/2!.....+1/n!.This will be the approx value of "e".
Output:
enter n:12
Approx Value of e is: 2.71828
Euler's number, e, can be approximated using a series expansion. The provided C program calculates e by summing the series up to 1/n! where n is entered by the user.
Euler's number, e, is a mathematical constant approximately equal to 2.71828. It can be computed using the series expansion:
e = 1 + 1/1! + 1/2! + 1/3! + ... + 1/n!Below is a C program that approximates e by computing the sum up to 1/n! where n is an integer entered by the user.
#include <stdio.h>Write a program that takes as input two opposite corners of a rectangle: (x1,y1) and (x2,y2). Finally, the user is prompted for the coordinates of a third point (x,y). The program should print Boolean value True or False based on whether the point (x,y) lies inside the rectangle. If the point lies on the rectangle, the program should print False.
Answer:
A python3 script is given below
Explanation:
Hi there!
In this program it is assumed that the rectangle will always be parallel to the x and y axis
# First we define three lists where the coordinates will be stored
# The notrect variable will help us if the p1 and p2 coordinates are along the same axis and therefore the will not make a rectangle,in the assumed sense
p1, p2, p3 = [],[],[]
notrect = False
# In this for cycle we ask the user for the coordinates and check if the first two make a rectangle
for i in range(3):
if i<2:
x = float(input('Please write x'+str(i+1)+': '))
y = float(input('Please write y'+str(i+1)+': '))
else:
x = float(input('Please write x: '))
y = float(input('Please write y: '))
if i==0: p1 = [x,y]
elif i==1: p2 = [x,y]
else: p3 = [x,y]
# If they do not make the rectangle we no longer ask for the third and exit the program
if p1 and p2:
if p1[0] == p2[0] or p1[1] == p2[1]:
notrect = True
print('These ponits does not make a rectangle')
break
#If notrect = True we say Bye to the user and nothing else happens
if notrect:
print('Bye')
# If they do make the rectangle we save the x and y coordinates of the rectangle separately, and sort them
else:
x = [p1[0],p2[0]]
y = [p1[1],p2[1]]
x.sort()
y.sort()
# If the x and y coordinates of the third point are between the x and y coordinates of the vertices of the rectangle the last point is indeed inside the rectangle, and print a True. Otherwise, we print a False
print((p3[0]>x[0] and p3[0]<x[1]) and p3[1]>y[0] and p3[1]<y[1])
The required codes are attached below:
Boolean value:
In programming, we generally need to implement values that can only have one of two values, either true or false. For this purpose, Java provides a special data type, i.e., boolean, which can take the values true or false.
Learn More information about the topic Boolean value:
https://brainly.com/question/26413022
The essence of strategy is ____, so competitive advantage is often gained when an organization tries a strategy that no one has tried before.
change
innovation
moving
work
Answer: Innovation
Explanation: Strategy is the planning for the execution of any task so that objective can be achieved. The strategy in organization is made for the long term goals which involves the participation of the the organizational elements from each level.
Innovation is the change in the organization in order to increase the creativity which is considered as the essence of organization. This helps in gaining the benefits such as increasing productivity, competitive advantage.
Other options are incorrect because change can be negative or positive for the organization, moving is the execution of the business work and work is the tasks of the organization.thus, the correct answer is innovation.
Which of the following statements is true about a file stream?
Select one:
a. It is optional to provide the file name to open for reading or writing.
b. You cannot use a single object to read as well as to write.
c. A file stream object can be used to open more than one file simultaneously.
d. A file should be closed after all the operations associated with it are complete
Answer: (c) A file stream object can be used to open more than one file simultaneously.
Explanation: File stream is application that is found on desktop that helps in accessing the files on demand and requirement of the Google Drive. The files team can access direction and updating takes place automatically.
It also helps in the accessing one or more files in a series through individual file stream object. After all the accessing and activities file gets closed as well and the updates gets save automatically.
Other options are incorrect because accessing the file for reading or writing requires file name mandatory and single object can open a file but cannot be used for writing and reading.Thus ,the correct options are option(c) .
A(n) ______________ is one that continually offers an improved product that customers are eager to purchase.
Select one:
a. Disruptive technology
b. Sustaining technology
c. Innovative technology
d. None of the above
Answer: b)Sustaining technology
Explanation: Sustaining technology is the technology that is used for enhancing the product than before . The improvement is made in the product to improve it's marketing and increasing it's value. In this way, the customer will tend to purchase the product .
Other options are incorrect because disruptive technology is the damaging the marketing of current product by using new marketing product, innovative technology is the technology that changing product to make it interesting.Thus, the most suitable option is option(b).
Write a program that finds the max binary tree height. (This Is an extremely short piece of code!)
Answer:
{
if(root==NULL)
return 0;
int l_height=height(root->left);//calculating height of left subtree.
int r_height=height(root->right);//calculating height of right subtree.
return 1+max(l_height,r_height);//returning the maximum from left and right height and adding 1 height of root.
}
Explanation:
The above written program is in C++.It find the height of a maximum height of the binary tree.The function uses recursion to find the height.
First the left subtree's height is calculated then right subtree's then finding the maximum from both of them and adding 1 height of the root.
Write a short program that allows the user to input a positive integer and then
outputs a randomly generated integer between 1 and the input number.
Answer:
// code in C++.
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables
int n;
cout<<"Enter a positive number:";
// read number
cin>>n;
// check number is positive or not
while(n<0)
{
// if number is negative
cout<<"Wrong input!!"<<endl;
// ask again to enter again
cout<<"Enter again:";
// read number again
cin>>n;
}
// generate random number between 1 to n
int ran=rand()%n +1;
// print random number
cout<<"Random number between 1 to "<<n<<" is: "<<ran<<endl;
return 0;
}
Explanation:
Read a number from user.Then if input number is negative then ask user to enter a positive number again.After this generate a random number between 1 to n.Print that random number.
Output:
Enter a positive number:-12
Wrong input!!
Enter again:9
Random number between 1 to 9 is: 2
Write a program that can compare the unit (per lb) cost of sugar sold in packages with different weights and prices. The program prompts the user to enter the weight and price of package 1, then does the same for package 2, and displays the results to indicate sugar in which package has a better price. It is assumed that the weight of all packages is measured in lb.
Answer:
The c++ program is given below.
#include <iostream>
using namespace std;
int main() {
double w1, p1, w2, p2, cost1, cost2;
cout << "Enter the weight of first sugar packet" << endl;
cin >> w1;
cout << "Enter the price of first sugar packet" << endl;
cin >> p1;
cout << "Enter the weight of second sugar packet" << endl;
cin >> w2;
cout << "Enter the price of second sugar packet" << endl;
cin >> p2;
cost1 = p1/w1;
cost2 = p2/w2;
if(cost1 < cost2)
cout << "Sugar in first package has better price." << endl;
else if(cost1 > cost2)
cout << "Sugar in second package has better price." << endl;
else if(cost1 == cost2)
cout << "Sugar in both packages has same price." << endl;
return 0;
}
OUTPUT
Enter the weight of first sugar packet
2
Enter the price of first sugar packet
45
Enter the weight of second sugar packet
3
Enter the price of second sugar packet
65
Sugar in second package has better price.
Explanation:
This program compares the unit cost of two sugar packages.
This program is designed to take user input but the user input is not validated since this is not mentioned in the question.
1. The double variables are declared for weights and prices for sugar in two packages.
2. Also, double variables are declared to hold the calculated values of unit cost per price for both the packages.
double w1, p1, w2, p2, cost1, cost2;
3. The program takes user input for weight and price for two sugar packages.
4. The unit cost for both sugar packages is calculated.
cost1 = p1/w1;
cost2 = p2/w2;
5. The unit cost for both packages are compared and the message is displayed on the output accordingly.
6. If the unit cost for both packages are the same, the message is displayed on the output accordingly.
7. The program ends with a return statement.
Why is all the info on the topology map required?
Answer: Topology/topographic maps are the maps that contain all the description and details about the human invented and natural components on the Earth like landscapes,etc.They give the realistic data along with the contour lines, structure etc.
The main purpose it contains the detailed information , because it is used in the professional field by the workers or experts and used for the three dimensional structure as the change in the landscapes and fields always persist .It is also used for the recreational infrastructure which requires a accurate and precise detailing.
.What is the /procfile system used for?
Answer:
The proc file system is basically used in the UNIX operating system and it acts as communication medium in the kernel space and the users.
It basically contain data or information about the processing system when it started and running.
The proc file system is the standardized and convenient method for providing the dynamic accessing data in the kernel. As, it is basically created dynamically during the boots up time and store information in the hierarchical type of file in the system.
What is back propagation?
Answer:
Back propagation is the algorithm which is basically used o improve the accuracy in the machine leaning and data mining. It is one of the most important tool in the mathematics to check the prediction with high accuracy.
The back propagation is also known as backward propagation and it is mainly used in the ANN (Artificial neural network).
The important features of the back propagation is that it has high efficiency for improving the networks. It is also recursive and iterative methods and ability to perform various tasks.
Final answer:
Back propagation is an algorithm used to train neural networks by minimizing the output error through gradient descent. It involves adjusting the weights of neurons based on the error gradient, which is calculated using the chain rule. The process leverages activation functions to allow the learning of complex patterns.
Explanation:
Back propagation is a fundamental algorithm used in the training of artificial neural networks. It is a supervised learning technique that adjusts the weights of the neurons in the network. The main goal of back propagation is to minimize the error in the output of the neural network by propagating the error backward through the network and updating the weights accordingly.
The process begins by feeding the network an input and letting it pass through the layers to produce an output. This output is then compared with the desired output, and the difference between them is the error. Back propagation takes this error and calculates the gradient of the loss function with respect to each weight in the network using the chain rule of calculus. The weights are then adjusted in the opposite direction of the gradient to reduce the error. This is typically done using an optimization algorithm like gradient descent.
An important component of back propagation is the use of activation functions which add non-linear properties to the network, allowing it to learn more complex patterns. During back propagation, derivatives of these activation functions are vital as they are involved in calculating the gradients.
Overall, back propagation is an iterative process, where multiple epochs of training may be necessary to reach the desired level of accuracy.
What are the advantages and disadvantages of using wireless communications? What are the advantages and disadvantages of using wired communications? Under what conditions is a wireless channel preferred over a wired channel? [Hint: use a table to compare and contrast the advantages and disadvantages of wired versus wireless communications.] Please give sources if possible
Answer:
Advantages of wireless communication:-
Flexibility in transferring the message through communication for which the sender and receiver can be in any place.Speed of the communication is accurate and fastDue to no wiring , the cost of the wireless communication is less.Disadvantages of wireless communication:-
The security is less as the data can be accessed by unauthorized sources at times.The setting up of wireless communication complex and expensive.Advantages of wired communication:-
Simple configurationHigher bandwidth is present in the cableHigh reliabilityDisadvantages of wired communication:-
Mobility is present for communicationInstallation requires lot of time due to cablingRequires extra devices for covering large areas for communicationWireless communication is more preferable than wired communication in the conditions like communication connection that should face low damage and longer life which is not present in cable connection as they break or get disrupted.The flexibility of moving while communication is required by most people so, they use wireless communication .
The advantages and disadvantages of wireless communications include portability, ease of installation, and flexibility as advantages, while they suffer from potential security issues, interference, and varying reliability. On the other hand, wired communications boast high stability, speed, and security but lack the mobility and ease of deployment that wireless offers. Wireless channels are preferred over wired when mobility, ease of setup, or physical cabling constraints are considerations.
Wireless communications offer the key advantages of mobility, ease of installation, and the ability to connect multiple devices without the need for physical cables. However, disadvantages include security concerns, as wireless communications can be more susceptible to unauthorized access, interference from other devices or physical barriers that can disrupt signals, and potentially less reliability in terms of consistent connectivity.
Wired communications, by contrast, offer greater security, as physical access to the network is required for connectivity, and are typically more stable and faster, as they are less likely to be affected by interference. The main disadvantages include the lack of mobility, as devices are tethered to specific locations by cables, and challenges in the installation process, especially in areas where running cables is difficult or impractical. Wireless channels are often preferred in situations where mobility is necessary, such as in conference rooms or public spaces, where devices are frequently moved or added, and where installing cables would be difficult or costly.
If your database is in archivelog mode, how can you force an archive?
A. Issue an alter database switch logfile command.
B. Issue an alter system switch logfile command.
C. Issue an alter system log_archive_start command.
D. There is no command to force an archive; they happen automatically.
Answer: (B) Issue an alter system switch logfile command.
Explanation:
When the database is in the archive log mode then, the issue in the alter system switch logfile command force the particular switch. It basically produce achieve redo log which is smaller in the size by the dedicated size of the parameter log buffer.
It also govern the particular size of the RAM (Random access memory) buffer by redo log. This command is basically faster to return in the program by the use of redo log.
On the other hand, all the options are incorrect as this command only alter the system and does not alter the database. Therefore, Option (B) is correct.
PROBLEM 4 Residential and business customers are paying different rates for water usage. Residential customers pay $0.005 per gallon for the first 6000 gallons. If the usage is more than 6000 gallons, the rate will be $0.007 per gallon after the first 6000 gallons. Business customers pay $0.006 per gallon for the first 8000 gallons. If the usage is more than 8000 gallons, the rate will be $0.008 per gallon after the first 8000 gallons. For example, a residential customer who has used 9000 gallons will pay $30 for the first 6000 gallons ($0.005 * 6000), plus $21 for the other 3000 gallons ($0.007 * 3000). The total bill will be $51. A business customer who has used 9000 gallons will pay $48 for the first 8000 gallons ($0.006 * 8000), plus $8 for the other 1000 gallons ($0.008 * 1000). The total bill will be $56. Write a program to do the following. Ask the user which type the customer it is and how many gallons of water have been used. Calculate and display the bill
Answer:
// here is program in C.
#include <stdio.h>
//main function
int main(void) {
// variables
char type;
int gallon;
double tot_cost=0;
printf("Enter the type of customer(B for business or R for residential):");
// read the type of customer
scanf("%c",&type);
// if type is business
if(type=='b'||type=='B')
{
printf("please enter the number of gallons:");
// read the number of gallons
scanf("%d",&gallon);
// if number of gallons are less or equal to 8000
if(gallon<=8000)
{
// calculate cost
tot_cost =gallon*0.006;
printf("\ntotal cost is: $ %lf",tot_cost);
}
else
{
// if number of gallons is greater than 8000
// calculate cost
tot_cost=(8000*0.006)+((gallon-8000)*0.008);
printf("\ntotal cost is: $ %lf",tot_cost);
}
}
// if customer type is residential
else if(type=='r'||type=='R')
{
printf("please enter the number of gallons:");
// read the number of gallons
scanf("%d",&gallon);
// if number of gallons are less or equal to 6000
if(gallon<=6000)
{
// calculate cost
tot_cost=gallon*0.007;
printf("\ntotal cost is: $ %lf",tot_cost);
}
else
{// if number of gallons is greater than 6000
// calculate cost
tot_cost=(6000*0.005)+((gallon-6000)*0.007);
printf("\ntotal cost is: $ %lf",tot_cost);
}
}
return 0;
}
Explanation:
Ask user to enter the type of customer and assign it to variable "type". If the customer type is business then read the number of gallons from user and assign it to variable "gallon". Then calculate cost of gallons, if gallons are less or equal to 8000 then multiply it with 0.006.And if gallons are greater than 8000, cost for first 8000 will be multiply by 0.006 and for rest gallons multiply with 0.008.Similarly if customer type is residential then for first 6000 gallons cost will be multiply by 0.005 and for rest it will multiply by 0.007. Then print the cost.
Output:
Enter the type of customer(B for business or R for residential):B
please enter the number of gallons:10000
total cost is: $ 64.000000
When no class constructors are supplied by the author of a class, C++ itself supplies a default constructor that does nothing.
Select one:
a. TRUE
b. FALSE
Answer:
The correct answer for the given question is an option(a) i.e "TRUE".
Explanation:
A constructor is those who initializes the object of a class it means they are used to initializes the member variable of a class.
When no constructor is supplied by the author in the class. There is always a default constructor is created when we create an object for the class. The object of the class automatically created a default constructor.
Hence the given statement is "true" .
Which part of the cable is used to carry data?
Answer:Inner conductor of cable
Explanation: The cable used for the transmission of data maintains the communication between the devices. The layer is made up the layers like jacket layer which is the outermost layer for the protection of wiring in cable .
A shield is also present on the inner conductor of the cable for the protection of the data from interference. The inner conductor is the part which transmits the data. Various types of the metal and alloys are used for making the conductor.It is a very sensitive part so it is protected with jackets of layer.
You have been asked to report on the feasibility of installing an IP CCTV camera system at your organization. Detail the pros and cons of an IP CCTV system and how you would implement the system.
Answer and Explanation:
IP CCTV:
New dangers are acquainted with the security world as frameworks move from conventional simple to IP organize empowered frameworks especially in video reconnaissance. Web Protocol (IP) give an open stage to incorporation at the information level of various security and life wellbeing gadgets and applications.
Pros: of IP CCTV :
Lower starting expense: Harnessing the IT framework decreases establishment costs in cabling, related control and electrical plugs.Wide-spread similarityGives adaptability and versatilityHigher security and versatilityThe tight programming joining between frameworks make them progressively canny and diminishes security holes, accelerate the reaction time.Cons of IP CCTV
It rotates around system security and programmers danger.The hazard increments if camera is gets to from the portable or telephone.The hazard increments if camera is gets to from the portable or telephone.SYN segments have ________.
headers
headers and data fields
headers, data fields, and trailers
data fields only
Answer: Headers
Explanation:
SYN segment is known as synchronization and the SYN sends the signal and then sending the a request to the server. The synchronization segment only include header and it does not carry any type of the data field as, the information are basically convey in the form of opening connection.
The SYN message only include the ISN number of the client as ISN is the initial sequence data number. And it also does not include any trailers.
Which of these characteristics is most important to a systems analyst? (1 point) (Points : 1.5) communicator
problem solver
programmer
project manager
Answer: Problem solver
Explanation:
Problem solver is the most important characteristics for the system analyst as it important for the organization to control all the problems.
System analysis basically define the problem in the particular organization to be solved and also provide the proper architecture in the system.
The good and strong problem solving ability makes the organization more efficient in the decision making problem and also improve the overall system analyst in the organization.
What are the disadvantages of cloud computing?
Answer: Cloud computing is the service that helps the usage of the services of the computer system parts (hardware and software) over a network .The disadvantages of the cloud computing are as follows:-
Cloud hacking-there are cases of the cloud hacking which is a incident against the security of the cloud computing devices.Technical problem-there is no quick fix provision for the mending the technical issue in the cloud computing network .Restricted features:-there are limitation on the number of features that are found in the different cloud computing such as accessibility , security, space.etc.
Complete the following conversions. You MUST show all of your work to receive full credit.
Convert the following decimal numbers to binary.
a. 357
b. 67
c. 252
d. 65000
e. 5795
Answer:
a. 101100101
b. 1000011
c. 11111100
d. 1111110111101000
e. 1011010100011
Explanation:
To convert any decimal number to binary you need to make a succession of divisions by 2, in the image I provide, you can see how the process was done, every time you divide your number by 2 you'll have a remainder, being this 0 or 1, this will become your binary number. It's important to notice that using this method you'll divide from right to left, but you'll take your remainders in the opposite direction (right to left) to form your binary number.
Hope you find this information useful! Good luck!
To convert decimal numbers to binary, divide by 2 and record the remainders until the quotient is zero. The binary representation is then read from the bottom up. This method is applied to convert the given decimal numbers to their binary equivalents.
Explanation:Converting decimal numbers to binary requires dividing the number by 2 and recording the remainder until the quotient is 0. Here's how you can convert the given decimal numbers to binary:
a. 357 in binary: Divide 357 by 2, remainder is 1, quotient is 178. Continue this process until the quotient is 0. The binary number will be the remainders read in reverse order: 101100101.b. 67 in binary: Same process as above, resulting in 1000011.c. 252 in binary: Following the same steps, we arrive at 11111100.d. 65000 in binary: This larger number follows the pattern, converting to 1111110110010000.e. 5795 in binary: After converting, the binary equivalent is 1011010010011.
What are data structures and algorithms? Why are they important to software developer?
Explanation:
Data structure is a way of gathering and organizing the data in such a way that we can perform operation on the data very efficiently.There are different types of data structures such as :-
ArraysLinked listStacksQueuesTreesGraphsThese are the basic data structures.
Algorithm:-It is a finite set of instructions written to accomplish a certain task.An algorithm's performance is measured on the basis of two properties:-
Time complexity.Space complexity.Software developers need to know data structures and algorithms because all the computers rely on data structures and algorithms so if you know data structures and algorithms better you will know the computer better.
Each phase of the system development life cycle is accomplished as a discrete, separate step. (1 point) (Points : 1.5) True
False
Answer: False
Explanation: System development life cycle is the cycle that is responsible for the functioning of the system's operation.The steps of the system's cycle are development, evaluation,testing,analysis ,designing,documentation and implementation.These steps are necessary for the successful conduction of the system.
The accomplishment of the these steps are dependent on each other. The software or hardware components have to go through each step to get evaluated properly. Thus the accomplishment of each step is based on the complete cycle.Thus the statement given is false.
In which of the following situations should you contact support? Check all that apply.
(A) You need help using the site.
(B) You can’t register.
(C) You are unable to submit your answers.
(D) You do not understand why an answer was marked as incorrect, but you have not yet read the explanation.
Answer:
I'd say A, B, C
Explanation:
A, If you can't figure out what you're supposed to do, that'd be a valid reason to contact support.
B, If you can't register that sounds like a problem on their end and they should be notified
C, If you can't submit answers that'd be the same as B.
You wouldn't select D, that would be on you not the site.
Immediate address is determined by a value in a register.
True
False
Answer: False
Explanation:
The given statement is false as, in the immediate addressing the value of operand is basically store in the instruction.
In the register addressing the address filed is basically denote as the register which contain the operand.
In the immediate addressing, the mode of the data is the specific part of the instruction and the operand is basically specify in instruction of the immediate addressing itself.
What is a milestone? Provide a few examples of milestones.
Answer:
A milestone is a significant progress point within your project. Milestones' main purpose is to set goals you have to achieve in order to succeed and complete your project
Explanation:
-Example 1-
You have to write a report for your project. This report contains introduction, problem background, results, and recommendations. The milestones for writing your report could be:
Milestone 1: introduction section is completed
Milestone 2: problem background section is completed
Milestone 3: results section is completed
Milestone 4: recommendations section is completed
-Example 2-
You have to design a webpage that allows the user to login, enters his/her name, and logout. The milestones in this case could be:
Milestone 1: login functionality is completed
Milestone 2: text field for typing the name is placed
Milestone 3: submit name button functionality is completed
Milestone 4: logout button functionality is completed
Milestone 5: all components of the webpage are fully integrated
You might think the goals in these examples can be set differently, and that is true. The definition of the milestones is in general subjective and it depends on how you design the steps you want to follow to complete your project. You might also want to add these milestones to a timeline so you have an estimated schedule of the development of your project.
A milestone is a significant event or stage that marks progress in development, used to evaluate skill or project achievement. Examples include motor skills like walking, language development like the first word, and project management deliverables.
A milestone is a significant event or point in development that marks an important stage in a project, process, or a person's life. They often serve as indicators of progress and can be used to evaluate achievement or skill level in various domains.
Examples of Milestones:
Motor milestones: These refer to crucial developmental steps in an individual's motor skills, like sitting up, crawling, and walking.
Language milestones: These are critical steps involved in the development of language skills, such as the onset of babbling, the first word, and the combining of words.
Project milestones: These might include deliverables established, a timeline for when remaining work will be completed, and noting any problems that may affect project scope or direction.
Milestones are also used in different contexts, such as educational achievements (like graduating from school), professional development (like receiving a promotion), or personal growth (like buying a first home). In project management, they often involve establishing a direct reference to milestones or deliverables, scheduling the completion of remaining tasks, and identifying any issues that could impact the project's trajectory. Effective use of milestones helps in keeping projects on track and allows for the evaluation of progress over time, which is crucial for success.
Which is a non-functional requirement?
Answer: Non-functional requirement (NFR) are the requirements that display the attributes of the software system such as usability,maintainability, performance etc. The operations of the operating system is judged by these factors which acts as the standard.
This gives the knowledge about the effectiveness and efficiency of the system after the evaluation of the system on these parameters.If the negative result for the non functional requirement is gained after the evaluation , this indicates the failure of the system.
Example:-throughput of operating system.
How are IP addresses usually written?
Explanation:
There are two versions of Internet Protocol(IP) present in which the IP address are written which are IPv4 and IPv6.The numbers in IPv4 are 32 bit long while in IPv6 the numbers are 128 bits long.
So let's see IPv4 addresses
IP addresses are written in human readable form.There are 4 groups of 8 bits which represent the corresponding decimal numbers.These groups are separated by (.) .Since there are 8 bits hence the numbers range is 0-255.
for ex:- 124.45.65.210
There are 3 dots the numbers are in the range of 0-255.There should be no leading zeroes present in the IP address.
. double x = 5; declares that x is a...............variable.
Answer:
x is a double type variable.
Explanation:
Here is x is a variable of type double which stores the value 5. The main purpose of a double datatype is storing the decimal point values. The precision of double datatype is two times more than the precision of float datatype. So on displaying the value of x in c++ it prints "5".
Following are the program of double datatype in c++
#include <iostream> // header file
using namespace std; // namespace
int main() // main function
{
double x=5; // variable declaration
cout<<x; // displaying the value of x
return 0;
}
Output:
5
Define and implement a method that takes a string array as a parameter and returns the length of the shortest and the longest strings in the array
Answer:
#HERE IS CODE IN PYTHON
#function to find length of shortest and longest string in the array
def fun(list2):
#find length of shortest string
mn=len(min(list2))
#find length of longest string
mx=len(max(list2))
#return both the value
return mn,mx
#array of strings
list2 = ['Ford', 'Volvo', 'BMW', 'MARUTI','TATA']
# call the function
mn,mx=fun(list2)
#print the result
print("shortest length is:",mn)
print("longest length is:",mx)
Explanation:
Create an array of strings.Call the function fun() with array as parameter. Here min() function will find the minimum string among all the strings of array and then len() function will find its length and assign to "mn". Similarly max() will find the largest string and then len() will find its length and assign to "mx". Function fun() will return "mn" & "mx".Then print the length of shortest and longest string.
Output:
shortest length is: 3
longest length is: 5
Final answer:
The problem involves writing a Java method to find the lengths of the shortest and longest strings in an array. The method iterates through each string to update and find the minimum and maximum lengths. It returns these lengths as an integer array.
Explanation:
To tackle the problem of finding the lengths of the shortest and longest strings in an array, we'll use a programming approach. Let's assume we are using Java for this solution. The method will iterate through the array, comparing the lengths of each string to find the minimum and maximum lengths.
Here is a simple Java method that accomplishes this:
public static int[] findShortestAndLongestStringLen(String[] array) {
if (array == null || array.length == 0) return new int[] {-1, -1}; // Handle empty or null array
int minLength = Integer.MAX_VALUE;
int maxLength = Integer.MIN_VALUE;
for (String str : array) {
if (str.length() < minLength) {
minLength = str.length();
}
if (str.length() > maxLength) {
maxLength = str.length();
}
}
return new int[] {minLength, maxLength};
}
This method initializes two variables, minLength and maxLength, with the maximum and minimum values an integer can have, respectively. It iterates through each string in the array, updating these values based on the length of each string. Finally, it returns an array of two integers: the shortest length found (minLength) and the longest (maxLength).
c++ 2.30 LAB: Phone number breakdown Given a long long integer representing a 10-digit phone number, output the area code, prefix, and line number, separated by hyphens. Ex: If the input is: 8005551212 the output is: 800-555-1212 Hint: Use % to get the desired rightmost digits. Ex: The rightmost 2 digits of 572 is gotten by 572 % 100, which is 72. Hint: Use / to shift right by the desired amount. Ex: Shifting 572 right by 2 digits is done by 572 / 100, which yields 5. (Recall integer division discards the fraction). For simplicity, assume any part starts with a non-zero digit. So 999-011-9999 is not allowed. LAB
Answer:
#include <iostream>
using namespace std;
int main()
{
//declare variable to store phone numbers,its area code, prefix and line number.
long phone_number;
int area_code, prefix,line_number;
cout<<"Enter 10-digit phone number:"<<endl;
//input 10-digit phone number
cin>>phone_number;
//logic to find area_code, prefix, and line_number.
area_code = phone_number/10000000;
prefix = (phone_number/10000)%1000;
line_number = phone_number%10000;
//output phone number in asked format.
cout<<area_code<<"-"<<prefix<<"-"<<line_number<<endl;
return 0;
}
Output:
Enter 10-digit phone number:
8005551212
800-555-1212
Explanation:
In the above program 10 digit phone number entered by user will be stored in the variable phone_number.
Then using this phone_number variable area_code, prefix, and line number are calculated using the following logic:
area_code = phone_number/10000000;
prefix = (phone_number/10000)%1000;
line_number = phone_number%10000;
Finally these area_code, prefix, and line_number are displayed with hyphen in between using cout statement.
The C++ program reads a 10-digit phone number, then extracts and prints its area code, prefix, and line number, separated by hyphens. It uses division and modulo operations to isolate the desired digits, ensuring non-zero starting digits for simplicity.
Here's a C++ solution for your problem:
```cpp
#include <iostream>
using namespace std;
int main() {
long long phoneNumber;
cout << "Enter a 10-digit phone number: ";
cin >> phoneNumber;
int areaCode = phoneNumber / 10000000;
int prefix = (phoneNumber / 10000) % 1000;
int lineNumber = phoneNumber % 10000;
cout << "Phone number breakdown: " << areaCode << "-" << prefix << "-" << lineNumber << endl;
return 0;
}
```
This C++ program reads a 10-digit phone number as a long long integer. It then extracts the area code, prefix, and line number using the given hints and prints them separated by hyphens.