Outputs a "pallete" of colors achievable via WinAPI SetConsoleTextAttribute

pallete.cpp

/// Outputs a "pallete" of colors achievable via WinAPI SetConsoleTextAttribute
/// Full article:
/// http://ru.yal.cc/cpp-colored-text-via-winapi/ (Russian)
/// http://yal.cc/cpp-colored-text-via-winapi/ (English)
#include <stdio.h>
#include <Windows.h>
int main(int argc, char* argv[]) {
    // foreground and background flags:
    int fb[4] = { FOREGROUND_RED, FOREGROUND_GREEN, FOREGROUND_BLUE, FOREGROUND_INTENSITY };
    int bb[4] = { BACKGROUND_RED, BACKGROUND_GREEN, BACKGROUND_BLUE, BACKGROUND_INTENSITY };
    int attr;
    // top-left corner:
    printf("B\\F");
    // top row:
    for (int x = 0; x < 16; x++) {
        attr = 0; for (int b = 0; b < 4; b++) if ((x & (1 << b)) != 0) attr |= bb[b];
        SetConsoleTextAttribute(hStdOut, attr);
        printf("   ");
    }
    printf("\n");
    // rows:
    for (int y = 0; y < 16; y++) {
        // left column:
        attr = 0; for (int b = 0; b < 4; b++) if ((y & (1 << b)) != 0) attr |= bb[b];
        SetConsoleTextAttribute(hStdOut, attr);
        printf("   ");
        // row:
        for (int x = 0; x < 16; x++) {
            attr = 0;
            for (int b = 0; b < 4; b++) if ((x & (1 << b)) != 0) attr |= fb[b];
            for (int b = 0; b < 4; b++) if ((y & (1 << b)) != 0) attr |= bb[b];
            SetConsoleTextAttribute(hStdOut, attr);
            printf("\xB0\xB1\xB2"); // 176, 177, 178
        }
        printf("\n");
    }
    // reset colors:
    SetConsoleTextAttribute(hStdOut,
        FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
    char s[1]; gets(s);
    return 0;
}