C Preprocessor MCQs

In C preprocessing, what is the purpose of the #elifndef directive?

What is the result of the #pragma warning directive in C preprocessing?

In C, what is the purpose of the #line directive?

C preprocessor

A preprocessor command

What will be the output of the program?

#include<stdio.h>
#define int char 
void main()
{
      int i = 65;
      printf("sizeof(i)=%d", sizeof(i));
}

What will be the output of the following program?

#include<stdio.h>
#define square(x) x*x 
void main()
{ 
      int i; 
      i = 64/square(4); 
      printf("%d", i); 
}

What will be the output of the program code?

#include<stdio.h>
#define a 10
void main()
{
      #define a 50
      printf("%d", a);
}

Choose the correct statement. I. The scope of a macro definition need not be the entire program. II. The scope of a macro definition extends from the point of definition to the end of the file. III. New line is a macro definition delimiter. IV. A macro definition may go beyond a line.