main.cpp

易学c++源码

#include "iostream.h"
void main()
{
	int year,month,date,numOfDay=0;
	cout <<"请输入日期（eg.2005 2 28）：";
	cin >>year >>month >>date;
	switch (month)
	{
	case 12:
		numOfDay=numOfDay+30;
	case 11:
		numOfDay=numOfDay+31;
	case 10:
		numOfDay=numOfDay+30;
	case 9:
		numOfDay=numOfDay+31;
	case 8:
		numOfDay=numOfDay+31;
	case 7:
		numOfDay=numOfDay+30;
	case 6:
		numOfDay=numOfDay+31;
	case 5:
		numOfDay=numOfDay+30;
	case 4:
		numOfDay=numOfDay+31;
	case 3:
		numOfDay=numOfDay+((year%4==0 && year%100!=0)||(year%400==0)?29:28);
	case 2:
		numOfDay=numOfDay+31;
	case 1:
		numOfDay=numOfDay+date;
		cout <<year <<"年" <<month <<"月" <<date <<"日是" <<year <<"年的第" <<numOfDay <<"天。" <<endl;
		break;
	default:
		cout <<"出错啦！"<<endl;
	}
}