#include<stdio.h>
#include<stdlib.h>
struct
{
    int day;
    int month;
    int year;
}Date;
int main()
{
    int days;
    printf("请输入年、月、日：");
    scanf("%d %d %d",&Date.year,&Date.month,&Date.day);
    if(Date.day>31)
    {
        printf("输入有误，请再次输入：");
        scanf("%d %d %d",&Date.year,&Date.month,&Date.day);
    }
    switch(Date.month)
    {
    case 1: days=Date.day; break;
    case 2: days=Date.day+31; break;
.................................
    printf("请输入年、月、日：");
    scanf("%d %d %d",&Date.year,&Date.month,&Date.day);
    if(Date.day>31)
    {
        printf("输入有误，请再次输入：");
        scanf("%d %d %d",&Date.year,&Date.month,&Date.day);
我想在输错时直接返回第一次输入那   应该怎样写呢？