Directions:

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

Question:
What will be the output of the program code?

Option A):
50
Option B):
None
Option C):
Compiler Error
Option D):
10

Correct Answer is Option A):
50

Explanation:
The preprocessor directives can be redefined anywhere in the program. So the most recently assigned value will be taken.