C Preprocessor - C Programming MCQ Questions and Answers

#define display(text) printf(#text "@")
main()
{
    display(hello.);
    display(good morning!);
}

#include <stdio.h>
#define p( n ) printf( "t%%\n" #n " = %d", t##n )
int t3=10;
int main()
{
    int x;
    x=p(3);
}

#include <stdio.h>
#define p( n,m ) printf( "%d", m##n )
#define q(a,b) printf("%d",a##b)
main()
{
   p(3,4);
   q(5,6);
}

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

#include <stdio.h>
#define display( n ) printf( "a" #n " = %d", a##n )
int main()
{
   display(3);
}

#include <stdio.h>
#define a 2
main()
{
    int r;
    #define a 5
    r=a*2;
    printf("%d",r);
}