在调试C语言程序时,有时需要打印宏的名字。可以通过定义宏,宏名字的数组来获得。
例如:
- #include <stdio.h>
- #define MACRO_STR(x) {x, #x}
- typedef struct _macro_str {
- int id;
- char *name;
- }MACRO_STR_T;
- typedef enum _color{
- RED,
- GREEN,
- BLUE,
- }COLOR;
- MACRO_STR_T g_color_str[] ={
- MACRO_STR(RED),
- MACRO_STR(GREEN),
- MACRO_STR(BLUE),
- {-1, NULL}
- };
- static const char * get_macro_name(MACRO_STR_T* table, int id)
- {
- int i = 0;
- while(table[i].id != -1 && table[i].name != NULL){
- if(table[i].id == id)
- return table[i].name;
- i++;
- }
- return "";
- }
- static const char * get_color_name(COLOR color)
- {
- return get_macro_name(g_color_str, color);
- }
- int main()
- {
- COLOR color = RED;
- printf("The name of color %d is '%s'. ", color, get_color_name(color));
- return 0;
- }