Code Exercise - Enumeration

Enumerations are similar to structs:

#include <stdio.h>

enum DAY
{
    MON=1,TUE=2,WED=3,THU=4,FRI=5,SAT=6,SUN=7//枚举
}day;
int main()
{
    for (day  = MON; day <= SUN; day++)
    {
        printf("%d",day);
    }
    return 0;
}