C语言实习制作万年历

#include<stdio.h>
#include<stdlib.h>
int monthday[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
/*数组monthday[13]存放每个月的天数*/
char monthname[13][6]={"","JAN","FEB","MAR","AP