Answer:
Variables which are declared within a function are called Local variables.They are named local because they are used locally only means they cannot be used outside the function in which they are declared.These local variables exist in the memory till the function execution starts and are deleted when the execution of function ends.Hence they lose their value between calls to the function in which they are declared.
Local variables lose their values between function calls because they are scoped to the function block, meaning they are removed from memory after the function ends. They prevent naming conflicts and allow modular coding by shadowing any variables with the same name defined outside the function.
Explanation:Local variables lose their values between calls to the function in which they are defined because they are scoped to the function block. This means that once a function call ends, the local variables that were defined within that function become inaccessible and are typically removed from memory, a process sometimes assisted by a garbage collector in certain programming languages.
Local variables are advantageous because they prevent naming conflicts and ensure that variables within a function do not affect variables with the same name outside the function, effectively shadowing them. This encapsulation allows for modular code, where functions can be understood and debugged in isolation without concerning other parts of the program.
In contrast to global variables, which persist throughout the runtime of the program, local variables defined within, for example, a block in C++ are known to be 'short-lived'. They encourage good programming practices by being limited to their respective scopes, thereby improving code clarity and potential memory efficiency.
Among all the scientists of the 1930s, ________ was sosuited to carry out the Manhattan project as J.RobertOppenheimer.
no scientists
not who was a scientist
none
a scientist never he
Answer:
none
Explanation:
Great question, it is always good to ask away and get rid of any doubts that you may be having.
The above phrase does not have any correct entry. The correct way of stating the sentence would be the following.
"Among all the scientists of the 1930's, none were as suited to carry out the Manhattan Project as J. Robert Oppenheimer."
none is an available answer but since the next part of the sentence says was so it would not make sense or be grammatically correct. Therefore you can either change the available answers or change the next two words in order for the sentence to make sense as well as be grammatically correct.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Among all the scientists of the 1930s, none was so suited to carry out the Manhattan Project as J. Robert Oppenheimer.
J. Robert Oppenheimer was an influential theoretical physicist who was tasked by President Franklin Roosevelt to lead the United States' nuclear program during World War II.
His leadership and expertise were crucial to the success of the Manhattan Project, which was carried out in Los Alamos, New Mexico, and resulted in the development of the first nuclear bomb.
Thanks to his exceptional talent, Oppenheimer is often referred to as the 'father of the bomb.'
x, y,w and z are Booleanvariables. Make the truth table for the expressiongiven below. (Marks8)
z =NOT(x XORy )AND w
Answer:
Refer the image for the truth table.
Explanation:
First 3 columns of the truth table are for the values of x,y,and w. The fourth columns is for the expression x XOR y .XOR gives output 1 when the inputs are not same if they are same the output is 0.Fifth column is for the NOT of X XOR y.Then the last columns is for the expression z that is and operation of w and the expression in fifth column.
From the binary search algorithm, it follows that every iteration of the while loop cuts the size of the search list by half.
True
False
Answer:
True: In binary search algorithm, we follow the below steps sequentially:
Input: A sorted array B[1,2,...n] of n items and one item x to be searched.
Output: The index of x in B if exists in B, 0 otherwise.
low=1high=n while( low < high ) { mid=low + (high-low)/2 if( B[mid]==x) { return(mid) //returns mid as the index of x } else { if( B[mid] < x) //takes only right half of the array { low=mid+1 } else // takes only the left half of the array { high=mid-1 } } }return( 0 )Explanation:
For each iteration the line number 11 or line number 15 will be executed.
Both lines, cut the array size to half of it and takes as the input for next iteration.
Write a complete C program that obtains two integers from the user, saves them in the memory, and calls the function void swap (int *a, int *b) to swap the content of the two integers. The main function of your program should display the two integers before and after swapping.
C program for swapping numbers
#include <stdio.h>
void swap(int *num1, int *num2)/*Defining function for swapping the numbers*/
{
int temp; /*using third variable to store data of numbers*/
temp = *num1;
*num1 = *num2;
*num2 = temp;
}
int main ()//driver function
{
int a,b;
printf("Enter the numbers for swapping\n");//taking input
scanf("%d %d",&a,&b);
printf("The numbers before swapping is a =%d and b=%d \n",a,b);
swap(&a, &b);//calling function for swaping
printf("The numbers after swapping is a=%d and b=%d",a,b);
return 0;
}
Output
Enter the numbers for swapping 3,4
The numbers before swapping is a =3 and b=4
The numbers after swapping is a=4 and b=3
T F The exit function can only be called from main .
Answer:
FALSE
Explanation:
The exit function is used to terminate or halt the process.
Syntax-
void exit(int status)
Exit function (exit()) can be used in any function not only main() and it will terminate your whole process.
Example- C Program
#include<stdio.h>
#include <stdlib.h>
// function declaration
float exitexample ( float x );
// Driver program
int main( )
{
float a, b ;
printf ( "\nEnter some number for finding square \n");
scanf ( "%f", &a ) ;
// function call
b = exitexample ( a ) ;
printf ( "\nSquare of the given number %f is %f",a,b );
/*This will not printed as exit function is in exitexample() function*/
}
float exitexample ( float x ) // function definition
{
exit(0); //exit function
float p ;
p = x * x ;
return ( p ) ;
}
Which of the following will cause asyntax error?(0 < num)&& (num <12)0 < num <120 < num&& num < 12num > 0&& num <12
Answer:
The answer to this question is that none of the following will give syntax error.All of them will get executed.
(0 < num)&& (num <12)
0 < num <12
0 < num&& num < 12
num > 0&& num <12
There is no syntax error i have checked on the compiler also.But logically we take variable on the left side of the comparison operator and the value to the right of the operator.
Write the 8-bit signed-magnitude, two's complement, and ones' complement representations for each decimal number: +25, + 120, + 82, -42, -111.
Answer:
Let's convert the decimals into signed 8-bit binary numbers.
As we need to find the 8-bit magnitude, so write the powers at each bit.
Sign -bit 64 32 16 8 4 2 1
+25 - 0 0 0 1 1 0 0 1
+120- 0 1 1 1 1 0 0 0
+82 - 0 1 0 1 0 0 1 0
-42 - 1 0 1 0 1 0 1 0
-111 - 1 1 1 0 1 1 1 1
One’s Complements:
+25 (00011001) – 11100110
+120(01111000) - 10000111
+82(01010010) - 10101101
-42(10101010) - 01010101
-111(11101111)- 00010000
Two’s Complements:
+25 (00011001) – 11100110+1 = 11100111
+120(01111000) – 10000111+1 = 10001000
+82(01010010) – 10101101+1= 10101110
-42(10101010) – 01010101+1= 01010110
-111(11101111)- 00010000+1= 00010001
Explanation:
To find the 8-bit signed magnitude follow this process:
For +120
put 0 at Sign-bit as there is plus sign before 120. Put 1 at the largest power of 2 near to 120 and less than 120, so put 1 at 64. Subtract 64 from 120, i.e. 120-64 = 56. Then put 1 at 32, as it is the nearest power of 2 of 56. Then 56-32=24. Then put 1 at 16 and 24-16 = 8. Now put 1 at 8. 8-8 = 0, so put 0 at all rest places.To find one’s complement of a number 00011001, find 11111111 – 00011001 or put 0 in place each 1 and 1 in place of each 0., i.e., 11100110.
Now to find Two’s complement of a number, just do binary addition of the number with 1.
The question involves converting decimal numbers to 8-bit signed-magnitude, two's complement, and ones' complement binary representations. Positive numbers are the same in all three representations, whereas negative numbers differ. The most significant bit represents the sign in signed-magnitude, while two's and ones' complements involve bit inversion for negative numbers.
Explanation:The question involves converting decimal numbers into three different binary number representations: 8-bit signed-magnitude, two's complement, and ones' complement. These representations are used in computing to express positive and negative integer values. For an 8-bit system, the most significant bit (MSB) indicates the sign of the number, where '0' usually represents positive and '1' represents negative.
For +25, the 8-bit signed-magnitude is 00011001, the two's complement and ones' complement are also 00011001 since it is a positive number.
For +120, the 8-bit signed-magnitude is 01111000, the two's complement and ones' complement are also 01111000.
For +82, the 8-bit signed-magnitude is 01010010, the two's complement and ones' complement are also 01010010.
For -42, the 8-bit signed-magnitude is 10101010, the two's complement is 11010110, and the ones' complement is 11010101.
For -111, the 8-bit signed-magnitude is 10101111, the two's complement is 10010001, and the ones' complement is 10010000.
Note that the two's complement is found by inverting all the bits of the absolute value of the number and then adding 1 to the least significant bit (LSB). The ones' complement is found simply by inverting all bits of the absolute value of the number.
Describe the general process of creating a DataFlow Diagram (DFD)
Answer:
General process of creating a data flow diagram:
Data flow diagram are used to represents the flow of data graphically and it is divided into physical and logical parameters. For creating the data flow diagram the steps involved are:
Select the data and name the DFD. In DFD add the entity for start the process and add that process in data flow diagram. Add a data store and continuous adding that data into DFD.Now, adding the data flow in DFD and name the data.
Which of the following is NOT foundwithin the content pane?labelstitlebartextareasbuttons
Answer: Title bar
Explanation: Content pane is like a content box with certain features containing the object and knowledge about it. It is usually referred with several factors like labels , text, buttons etc to load the data in the dynamic way. These features are present within the content pane. The only feature outside the content pane is title bar and thus is not found in content pane.
In what conditions we use forward and backwardchaining in prolog please specify?
Answer:
Explanation:
Forward Chaining:
As the name suggests, Forward Chaining is the method of arriving at the goal with the available data and the data that is produced from the available data. With the help of the available data more data is produced by using inference rules. With the combination of available data and the produced data, a goal will be reached.
Backward Chaining:
As the name suggests, Backward Chaining is the method of finding the reasons behind the goal or hypothesis. It is used when the goal is present and checking if the available data supports / satisfies the goal.
Glven an array named Scores with 25 elements, what is the correct way to assign the 25th element to myScore? A. myScores + 25 B. myScore Scores[24] C. myScore Scores[25) D. myScore== Score[last]
Answer:
myScore Scores[24]
Explanation:
The array is used to store the data in continuous memory location.
The index of array start from zero, it means first element store in the index zero and second element store in the index 1. So, the index at which the element store is less than 1 from the number of element.
so, the last element is 25 - 1=24.
Option A: myScores + 25
It is not the correct way to store the element.
Option B: myScore Scores[24]
it is the correct form and also the index location is correct.
Option C: myScore Scores[25)
index number is wrong and also the bracket is wrong, it must be [ ].
Option D: myScore== Score[last]
It is not the correct way to store the element.
There, the correct option is B.
Which is it?...coloring,flagging,filing, or reading your email is an easy way to catergorize it?
Answer:
Flagging is an easy way to categorize an email.
Explanation:
We can flag our emails to find it easily at a later time. Flagged email messages are easy to spot because of their icon. We can also flag email messages for following up on a particular email.
Thus flagging is an easy way to categorize an email.
The scope of a variable declared in a for loop's initialization expression always extends beyond the body of the loop
True False
Answer:
False
Explanation:
for loop is used to run the statement again and again until the condition put inside the for loop is false.
syntax:
for(initialization;condition;increment/decrement)
{
statement;
}
the initialization scope is valid only within the curly braces of the for loop. it is not valid outside the body of the for loop.
because initialization is the part of the for loop.
When displaying fonts, what%u2019s the difference between pixels, points and ems?
Answer:
All 3 are CSS unit sizes which we can use for margins, fonts, borders etc.
Explanation:
CSS has four different unit sizes. These are:
Pixels (px)
Points (pt)
Ems (em)
Percentages(%)
These units are divided into two different groups. They are fixed and relative.
Pixels and points are fixed , whereas em and percentages are relative unit sizes. Relative unit sizes are good when creating scalable layouts.
Ems (em):
An em is a CSS unit that measures the size of a font. Originally, the em was equal to the width of the capital letter M, which is where its name originated.
It stands for "emphemeral unit" which is relative to the current font size.
The "em" is a scalable unit that is used in web document media. Ems have mobile-device-friendly nature.
Pixels (px):
Pixels are fixed-size units that are used in screen media. One pixel is equal to one dot in computer. The problem with pixel unit is that it is not relative .
Points (pt):
Point values are only for print. A point is a unit of measurement use for real-life ink on paper. Generally, 72pts= 1 inch which is one real-life inch like on a ruler. Point is not recommended to use in web pages.
Generally, 1em=16px=12pt=100% if the body size is 100%.
Relative unit sized fonts change and fixed unit sized fonts remain the same.
For example,
body { font-size: 100%}
p{font-size: 16px}
Special variables that hold copies of function arguments are called _________.
Answer:
Special variables that hold copies of function arguments are called parameters.
Write a calculator program that keep reading operations and double numbers from user, and print the result based on the chosen operation using while loop. The loop must stop if the user enters Q letter.
NOTE: no need to write two classes.
Typical run of the program:
Enter an operation(+,-,*,/), Q to quit: +
Enter your first number: 6
Enter your second number: 5
Result= 11.0
Enter an operation(+,-,*,/), Q to quit: *
Enter your first number: 5
Enter your second number: 5
Result= 25.0
Enter an operation(+,-,*,/), Q to quit: q
You calculator has been ended!
Answer:
#include <iostream>
using namespace std;
int main()
{
char opt;
double num1,num2;
cout<<"Enter an operation(+,-,*,/), Q to quit: ";
cin>>opt;
while(opt != 'Q'){
cout<<"\nEnter your first number: ";
cin>>num1;
cout<<"\nEnter your second number: ";
cin>>num2;
if(opt == '+'){
cout<<"Result = "<<num1+num2<<endl;
}else if(opt == '-'){
cout<<"Result = "<<num1-num2<<endl;
}else if(opt == '*'){
cout<<"Result = "<<num1*num2<<endl;
}else if(opt == '/'){
cout<<"Result = "<<num1/num2<<endl;
}
cout<<"Enter an operation(+,-,*,/), Q to quit: ";
cin>>opt;
}
return 0;
}
Explanation:
First, include the library iostream, it allows to use the input/output instruction.
Create the main function and declare the variables.
Then print the message on the screen using cout instruction.
cin instruction is used to store the value into the variable.
then, take a while and check the condition if the value enters by the user is 'Q' or not. if true then enter the while otherwise exit.
after that, store the number enter by the user in the variables and then take the if-else statement for matching the operation enter by the user if match true then do the match operation.
This process continues until the user enters the value 'Q'.
if the user enters the 'Q' then condition false and exit the program.
When the amount of storage data is big, and we need the searching and insertion must be very fast, which kind of data structure we should consider? a. Hash table b. Binary tree c. Array d. Linked Lists
Answer:
b. Binary tree
Explanation:
The time complexity of a binary tree is O(log n). As it scales up in size (n), the time taken is only log n. This is because it makes use of divide and conquer to split up the data which makes searching and inserting very simple. However, this only holds if the data is already sorted.
. Which of thefollowing is not a characteristic of marketing plan?
a. It shouldprovide a strategy to accomplish the company mission
b. It shouldprovide for the use of existing resources
c. It should besimple and short
d. It should berigid
Answer: d)It should be rigid
Explanation: Marketing plan is the basic report that gives the outline about the strategy of marketing in the coming time. The marketing strategy usually include the facts such as simple plan, using resources accordingly and in sufficient way, some future goals, metrics with high level,etc .But the plan should not be rigid, it will make the marketing plan restricted to certain limit which is not included in good marketing strategy.
________splitting places a group of columns in onetable and the remaining columns in anothertable.1. Horizontal2. Vertical3. Both 1 and 2
Answer:
2. Vertical
Explanation:
Vertical splitting places a group of columns in one table and the remaining columns in another table.
State whether true or false.
i) init( ) of servlet is called after a client request comes in
ii) Servlets are ultimately converted into JSP
A) i-false, ii-false
B) i-false, ii-true
C) i-true, ii-false
D) i-true, ii-true
Answer:
A) i-false, ii-false
Explanation:
i)
init() method is only called once at the time of creation of servlet,it is not called for the client request.It is a one time initialization.The init() method is used creating and loading data that will be used throughout the life of the servlet.
Definition Init() method
public void init() throws ServletException {
// Initialization code...
}
ii)
Servlet is a java class that contains Java Api specification.Every Jsp is ultimately converted to Servlet, as in JSP you put Java inside HTML and for Servlet you put HTML inside JAVA.Both JSP and Servlet is used for server side scripting.
What is the printout of the call nPrint("a", 4)?
static void nPrint(String message, int n) {
while (n > 0) {
System.out.print(message);
n--;
}
}
Please explain so that I can learn from you.
Answer:
aaaa
Explanation:
We have a function nPrint which return type is void, it means it returns nothing.
we declare the two parameters, one parameter is string type and the second parameter is an integer type.
Then, it has a while loop that executes the statement again and again until the condition not FALSE.
Let dry run the code:
First, call the function nPrint("a", 4) bypassing the value in the argument.
then, the value receives by the parameters, the message contains "a" and n contain 4. After that, while loop checks the condition 4 > 0, which is TRUE and the program starts executing the statement.
The program prints the message on the screen "a" and then decreases the value of n by 1. So, the value of n becomes 3.
The above process repeats for the value of n = 3, 2, 1
and print the message "aaaa".
then, the condition becomes false and the program terminates the loop.
Therefore, the answer is aaaa
For most general purpose processors, how does the operating system handle the situation when the processor is idle?
Answer:
The operating system handle this system idle situation by using the System Idle Process.
Explanation:
This system idle process constantly keeps the processor occupied means that the processor will not freeze when no processes are in work.When a process is using 12% of the CPU then 88% of the CPU is used by the system idle process.You can see this in the task manager of your windows.
Servlet session and JSP session have different abilities.TrueFalse
Answer:
The answer to this question is False.
Explanation:
According to life cycle of a JSP it has to becomes a servlet in the end.So there is no difference between their session handling capacities because in the end they are same.So we conclude that answer to this question is False.
The purpose of a report is to
A. organize and summarize data.
B. filter data.
C. search for specific data points.
D. sort data chronologically.
Answer:
c
Explanation:
Reports communicate information which has been compiled as a result of research and analysis of data and of issues
Give a pseudo-code description of the O(n)-time algorithm for computing the power function p(x,n).Also draw the trace of computing p(3,3)using this algorithm?
Answer:
p(x,n)
1. if(n==0) [if power is 0]
2. then result =1.
3.else
4. { result=1.
5. for i=1 to n.
6. { result = result * x. } [each time we multiply x once]
7. return result.
8. }
Let's count p(3,3)
3[tex]\neq[/tex]0, so come to else part.
i=1: result = result *3 = 3
i=2: result = result *3 = 9
i=2: result = result *3 = 27
Explanation:
here the for loop at step 4 takes O(n) time and other steps take constant time. So overall time complexity = O(n)
What process makes one group a member of another group? nesting cloning copying grouping
Answer: Nesting
Explanation: The process of making one group the part of another group is defines as nesting. it is mostly done in the programming . This process helps in reduction of the program by nesting the functions. Nesting is done in computer field in applications as well to make one document the part of other document .Therefore, nesting is the correct option .
In Java, which of these classes implement the LayoutManagerinterface?
?? RowLayout
?? ColumnLayout
?? GridBagLayout
?? FlowLayoutManager
Answer:
GridBagLayout,FlowLayoutManager
Explanation:
LayoutManager interface is the interface used for laying out containers.Components like Button,text boxes are placed by Layout Manager,it is used to determine size and position of components in a container.
We can implement this interface via many classes like -
SpringLayout, SynthScrollBarUI, ViewportLayout , FlowLayout, GridBagLayout, GridLayout etc.
GridBagLayout-This layout arranges the components in vertical,horizontal or in baseline irrespective of their size.The orientation of the GridBagLayout depends on the container's ComponentOrientation property.
GridBagLayout is associated with an instance of GridBagConstraints which manages each component.
FlowLayoutManager-This layout arranges the components in a directional flow. The alignment of line is determined by componentOrientation.
ComponentOrientation .LEFT_TO_RIGHT
ComponentOrientation.RIGHT_TO_LEFT
Write a pseudocode statement thatsubtracts the vaiable downPayment from the variable total andassigns the reult to the variable due.
Answer:
initialize the variables total and downPayment.
int due = total - downPayment;
Explanation:
In the programming, before use the variable in the code you have to declare the variable.
then, there are the mathematical operators in the programming to perform the mathematical calculation.
for perform addition, the operator is '+'.
for performing multiplication, the operator is '*'.
similarly, for performing subtraction, the operator is '-'.
and there is one more assignment operator in programming which is used to assign the value to the variables. The assignment operator is '='.
so, int due = total - downPayment;
in the above, the program subtracts the downPayment value from the total value and assign to the variable due which is an integer type.
In which of the following is “y” not equal to 5 after execution? X is equal to 4.
a) y = ++x; b) y = x = 5; c) y = 5; d) y = x++;
Answer:
d) y=x++
Explanation:
In all 3 statements:
y= ++x;
y=x=5;
y=5;
The value of y is equal to 5.
However in the statement y=x++, the value of 5 is equal to value of x prior to the increment operation. The original value of x was 4. So the value of y will be 4. Note that after the statement execution, the value of x will be updated to 5. In effect y=x++ can be visualized as a sequence of following steps:
x=4;
y=x;
x=x+1;
The good example of pivoting is changing thedimensions along the axis.? True? False
Answer:
False
Explanation:
The good example of pivoting is NOT changing the dimensions along the axis.