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Home Questions & Answer Technology Questions & Answers C programming Questions & Answers

C programming Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

calloc() belongs to which library
Astdlib.h

Bmalloc.h
Ccalloc.h
DNone of above

Difference between calloc() and malloc()
Acalloc() takes a single argument while malloc() needs two arguments
Bmalloc() takes a single argument while calloc() needs two arguments

Cmalloc() initializes the allocated memory to ZERO
Dcalloc() initializes the allocated memory to NULL

What will be the output of following program
#include
main()
{
int x,y = 10;
x = y * NULL;
printf("%d",x);
}
Aerror
B0

Due to variable scope in c
AVariables created in a function cannot be used another function

BVariables created in a function can be used in another function
CVariables created in a function can only be used in the main function
DNone of above

What will be output of
#include
void main()
{
char test =`S`;
printf(" %c",test);
}
AS

BError
CGarbage value
DNone of above
EAnswer And Explanation

Continue statement used for
ATo continue to the next line of code
BTo stop the current iteration and begin the next iteration from the beginning

CTo handle run time error
DNone of above

Break statement is used for
AQuit a program
BQuit the current iteration

CBoth of above
DNone of above

The first expression in a for loop is
AStep value of loop
BValue of the counter variable

CAny of above
DNone of above

We can insert pre written code in a C program by using
A#read
B#get
C#include

D#put

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