本程序源自维基百科。

Declaring a bit field in C:

#include 
    
     // opaque and show#define YES 1#define NO  0// line styles#define SOLID  1#define DOTTED 2#define DASHED 3// primary colors#define BLUE  4  /* 100 */#define GREEN 2  /* 010 */#define RED   1  /* 001 */// mixed colors#define BLACK   0                    /* 000 */#define YELLOW  (RED | GREEN)        /* 011 */#define MAGENTA (RED | BLUE)         /* 101 */#define CYAN    (GREEN | BLUE)       /* 110 */#define WHITE   (RED | GREEN | BLUE) /* 111 */const char * colors[8] = {"Black", "Red", "Green", "Yellow", "Blue", "Magenta", "Cyan", "White"};// bit field box propertiesstruct box_props{     unsigned int opaque       : 1;     unsigned int fill_color   : 3;     unsigned int              : 4; // fill to 8 bits     unsigned int show_border  : 1;     unsigned int border_color : 3;     unsigned int border_style : 2;     unsigned int              : 0; // fill to nearest byte (16 bits)     unsigned char width       : 4, // Split a byte into 2 fields of 4 bits                   height      : 4;};