Needle And haystack

#include <stdio.h>

enum RightsFlags {
    user = 2,
    moderator = 4,
    admin = 8
};

int hasFlag(int haystack, int needle) {
    return (haystack & needle) == needle;
}

int main(int argc, const char * argv[])
{

    // insert code here...
    printf("Hello, World!\n");
    
    int userFlag = admin;
    printf("%d\n", hasFlag(moderator|admin, userFlag));
    return 0;
}