What is the Output of the program?

Question

#include <stdio.h>

int p=20;

int main(){
int p=10;
printf("%d", ::p);
return 0;
}
==================
What is the meaning of "::p" mainly here???

Answer 1

:: is a scope resuluation operator used to access global scope variable when local variable have same name. But it is not available in c i think. It is available in c++..