C++：输入年月日判断是一年中的第几天

#include<stdio.h>
int main()
{
    int M[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},
    {0,31,29,31,30,31,30,31,31,30,31,30,31}};
    int year,month,day;
    int yearday,leap,i;
    printf("输入年，月，日：\n");
    scanf("%d%d%d",&year,&month,&day);
    //leap为1是润年，为0是非闰年
    leap=((year%4==0)&&(year%100!=0||year%400==0));
    yearday=day;
    for(i=1;i<month;i++)
        yearday+=M[leap][i];
    printf("yearday=%d\n",yearday);
    return 0;
}

运行结果 ↓

C++：输入年月日判断是一年中的第几天

原文：https://blog.51cto.com/15121915/2650607