一年当中第几天#include<stdio.h>int main(){ int x,y,z,i,sum=0; int a[12]={31,28,31,30,31,30,31,31,30,31,30,31}; while((scanf("%d/%d/%d",&x,&y,&z))!=EOF){ sum=0; for(i=0;i<y-1;i++){ sum=sum+a[i]; } sum=sum+z; if((x%4==0&&x%100!=0||x%400==0)&&y>2){ sum=sum+1; } printf("%d\n",sum); } return 0;}