要求输入年份和月份 得出本月天数
#include<stdio.h>
void main()
{
    int year,month;
    printf("input year and month:");
    scanf("%d%d",&year,&month);
     if(month==2)
     {
         if((year%4==0&&year%100!==0)||(year%400==0))
             printf("the days of %d of %d is 29",year,month");
         else printf("the days of %d of %d is 28",year,month");
     }
 switch(month)
     {
         case 1:
         case 3:
         case 5:
         case 7:
         case 8:
         case 10:
         case 12:prtinf("the days of %d of %d is 31",year,month);break;
         case 4:
         case 6:
         case 8:
         case 11:prtinf("the days of %d of %d is 30",year,month);break;
         default:printf("error input!\n");
     }
}
10 errors,1 warning      
不太清楚错在哪里了 请指教qaq

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