C Preprocessor

Which of the following are C preprocessors?

What is the output of this program?

#include  
#define x 3
int main()
{
  int i;
  i = x*x*x;
  printf("%d",i);
  return 0;
}

What will be the output of the following C code?

#include
#define san 10
main()
{
    #ifdef san
    #define san 20
    #endif
    printf("%d",san);
}

#include 
#define X 3
#if !X
    printf("Geeks");
#else
    printf("Quiz");
  
#endif
int main()
{
        return 0;
}

What will be the output of the program?

#include
#define MAN(x, y) ((x)>(y)) ? (x):(y);

int main()
{
    int i=10, j=5, k=0;
    k = MAN(++i, j++);
    printf("%d, %d, %d\n", i, j, k);
    return 0;
}

Output?

#include 
#define f(g,g2) g##g2 
int main() 
{ 
   int var12 = 100; 
   printf("%d", f(var,12)); 
   return 0; 
}

What is the output generated by the following code?
    #define square (a) (a*a)     printf("%d", square (4+5) ) ;

What will be the output of the following C code?

#include 
    int main()
    {
        int one = 1, two = 2;
        #ifdef next
        one = 2;
        two = 1;
        #endif
        printf("%d, %d", one, two);
    }

What will be the output of the program?

#include
#define SQUARE(x) x*x

int main()
{
    float s=10, u=30, t=2, a;
    a = 2*(s-u*t)/SQUARE(t);
    printf("Result = %f", a);
    return 0;
}

What will be the output of the program?

#include
#define str(x) #x
#define Xstr(x) str(x)
#define oper multiply

int main()
{
    char *opername = Xstr(oper);
    printf("%s\n", opername);
    return 0;
}