/*-----------------------------
-------six★丶terry------------
-----------------------------*/

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    int day = 0;
    int month = 0;
    int year = 0;
    int sum = 0;
    int leap = 0;
    int i = 0;
    do{
            /*----------------------------------*/
            /*----------输入模块----------------*/
            /*----------------------------------*/
            i = 0;
            printf("请输入年、月、日：用“-”分隔:");
            scanf("%d-%d-%d",&year,&month,&day);
            fflush(stdin);
            /*----------------------------------*/
            /*----------判断模块----------------*/
            /*----------------------------------*/
            if( 0 == year%400 || (0 == year%4 && 0 != year%100))/*判断是不是闰年*/
                {
                    leap = 1;
                }
            else
                {
                    leap = 0;
                }
            if(((month == 1 || month ==3 || month == 5 || month ==7 ||month == 8 || month ==10 || month == 12 ) && day <= 31 && 0 <=day )
                || (( month ==4 || month == 6 || month ==9 ||month == 11  ) && day <= 30 && 0 <=day )
                || (month == 2 &&(leap == 0 && day <= 28 && 0 <=day ) || (leap == 1 && day <= 29 && 0 <=day )))
                {
                switch(month)/*先计算某月以前月份的总天数*/
                    {
                      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;
                      default:
                            printf("月份错误！！！");
                            i = 1;
                            break;
                    }
                        sum = sum + day; /*再加上某天的天数*/
                        if(leap == 1 && month > 2)
                        {
                            sum++;
                        }
                        
                        
                }
            else
                {
                    printf("您的输入有错误！！！\n请重新输入！！\n");
                    i = 1;
                }
    }while(i);

    printf("%d月%d日是%d年的第%d天\n",month,day,year,sum);

    system("pause");
    return 0;
}