把枚举转化为相应的字符串

#include<stdio.h>
#include<stdlib.h>


enum cmd{
	CMD_UNSPEC = 0,
	CMD_ADD,
	CMD_SUB,
	CMD_MULTI,
	CMD_DIV,
};
static inline char * cmd_str(enum cmd c){
	static const char *strings[] = {"CMD_UNSPEC", "CMD_ADD", "CMD_SUB", "CMD_MULTI", "CMD_DIV", };
	return strings[c];
}

int main(void){
	
	printf("%s\n", cmd_str(CMD_ADD));

	exit(0);
}

#include<stdio.h>
#include<stdlib.h>


/*将相应的枚举类型转为字符串(这种方法很重要)*/
#define FOREACH_CMD(CMD)         CMD(CMD_UNSPEC)           CMD(CMD_ADD)          CMD(CMD_SUB)           CMD(CMD_MULTI)  
#define GENERATE_ENUM(ENUM) ENUM,
#define GENERATE_STRING(STRING) #STRING,

enum CMD_ENUM {
    FOREACH_CMD(GENERATE_ENUM)
};

static const char *CMD_STRING[] = {
    FOREACH_CMD(GENERATE_STRING)
};

int main(void){
	printf("%s\n", CMD_STRING[CMD_ADD]);
	exit(0);
}