示例1：
#include "stdio.h"
void main()
{
	enum {Mon, Tue, Wed, Thr, Fri, Sat, Sun};
	printf("Mon = %d\n", Mon);
	printf("Tue = %d\n", Tue);
	printf("Wed = %d\n", Wed);
	printf("Thr = %d\n", Thr);
	printf("Fri = %d\n", Fri);
	printf("Sat = %d\n", Sat);
	printf("Sun = %d\n", Sun);

	printf("-----------\n");

	//枚举相当于是个常量集，相当于一下操作
    #define MON 0
	#define TUE 1
	#define WED 2
	#define THR 3
	#define FRI 4
	#define SAT 5
	#define SUN 6
	printf("MON = %d\n", MON);
	printf("TUE = %d\n", TUE);
	printf("WED = %d\n", WED);
	printf("THR = %d\n", THR);
	printf("FRI = %d\n", FRI);
	printf("SAT = %d\n", SAT);
	printf("SUN = %d\n", SUN);
}


示例2：

#include <stdio.h>

enum
{
Qi=1,//企划部
Cai,//财务部
Ren,//人力资源部
Shi,//市场部
};

main()
{
int n;

printf("1-企划部,2-财务部,3-人力资源部,4-市场部\n");
printf("请输入：");
scanf("%d",&n);

printf("你输入的是：");
switch(n)
{
case 1:
printf("企划部\n");
break;
case 2:
printf("财务部\n");
break;
case 3:
printf("人力资源部\n");
break;
case 4:
printf("市场部\n");
break;
}
}

ENUM枚举学习