int year,month,day,sum;
printf("请输入年,月,日以逗号分割:");
scanf("%d,%d,%d",&year,&month,&day);
switch(month)
{
case 1:sum=0;break;
case 2:sum=31;break;
case 3:sum=59;break;
case 4:sum=90;break;
case 5:sum=120;break;
case 6:sum=151;break;
case 7:sum=181;break;
case 8:sum=212;break;
case 9:sum=243;break;
case 10:sum=273;break;
case 11:sum=304;break;
case 12:sum=334;break;
}
sum = sum+day;
if((year%4==0&&year%100!=0)||year%400==0)
{
if(month>2)
{
sum++;
}
}
printf("输入的%d年%d月%d日为:第%d",year,month,day,sum);
getch();