C Preprocessor - C Programming MCQ Questions and Answers

#include<stdio.h>
#define max 100
main()
{
    #ifdef max
    printf("hello");
}

#include<stdio.h>
#define hello 10
main()
{
    #ifdef hello
    #undef hello
    #define hello 100
    #else
    #define hello 200
    #endif
    printf("%d",hello);
}

#include<stdio.h>
void f()
{
    #define sf 100
    printf("%d",sf);
}
int main()
{
    #define sf 99;
    f();
    printf("%d",sf);
}

#define HELLO(a) #a
main()
{
    printf(HELLO(good        morning)); 
}

#include<stdio.h>
#define ram 10
main()
{
    #ifdef ram
    #define ram 20
    #endif
    printf("%d",ram);
}