C语言 枚举小例子

#include <stdio.h>
enum color{red,yellow,green};
int main()
{
    int t;
    t=green;
    printf("   %d\n",t);
    printf("   %d\n",t-1);
    printf("   %d\n",t-2);
    return 0;
}

enum 枚举类型名字{0,1,2，...};

0,1,2,…表示下标

#include <stdio.h>

enum color{red,yellow,green};

void f(enum color c);

int main()
{
    enum color t=green;//t为enum color 的变量类型
    printf("%d\n",t);
    scanf("%d",&t);
    f(t);

    return 0;
}
void f(enum color c)//enum不能忘
{
    printf("%d\n",c-1);
}