6 bit union representing cards

#include <stdio.h>

// 6 bit structure
typedef struct pcard
{
    // don't need negative representation
    unsigned pips: 4;   // 4 bits = 0 - 15
    unsigned suits: 2;  // 2 bits = 0 - 3
} pcard;

int main()
{
    pcard c;

    /***
     * Suits numerical values
     * 0 - hearts
     * 1 - clubs
     * 2 - spades
     * 3 - diamonds
     ***/
    c.pips = 9;
    c.suits = 2;

    printf("Card pip: %d\n", c.pips);
    printf("Card suits: %d\n", c.suits);
}