Hello,
I just recently started to learn C and i have a small question.
I wanted to use Flags to send to a function, but so far i havent been able to get them to work.
I have created a small command program in VS 2008. The only thing it prints out is Red, what am i missing?
Code:#include "stdafx.h" #define RED 0001 #define BLUE 0010 #define GREEN 0011 #define BLACK 0000 #define YELLOW 0100 void PrintData(char); int _tmain(int argc, _TCHAR* argv[]) { int res; PrintData(RED | BLUE); scanf("%d", &res); return 0; } void PrintData(char mask) { if ((RED & mask) == 1) printf("Red is used.\n"); if ((BLUE & mask) == 1) printf("Blue is used.\n"); if ((GREEN & mask) == 1) printf("Green is used.\n"); if ((BLACK & mask) == 1) printf("Black is used.\n"); if ((YELLOW & mask) == 1) printf("Yellow is used.\n"); }