C++第三章 第1题

题目：设计Date类，该类采用3个整数存储日期：month、day和year。其函数成员具有按如下方式输出日期的功能：
12-25-11
December 25, 2011
25 December 2011

#include
#include
char *transform(int x);    //将月份数字转换为单词 
using namespace std;
class Date
{
	int month,day,year;
public:
	void setMonth(int a){month=a;};
	void setDay(int b){day=b;};
	void setYear(int c){year=c;};
	int getMonth(){return month;};
	int getDay(){return day;};
	int getYear(){return year;};
	int printOne();              //第一种输出 12-25-11 
	int printTwo();              //第二种输出  December 25,2011
	int printThree();            //第三种输出  25 December 2011 
};

int Date::printOne()
{
	int x;
	x=year%100;
	cout<>year;
	cout<<"请输入月份："<>month;
	while(flag<200)                                       //检验月份是否在1~12 
	{
		if(month<1||month>12)
		    {
			cout<<"月份输入错误，请重新输入：";
		    cin>>month;
		    flag++;
		    }
		else
		    break;
	}
	cout<<"请输入天："<>day;
	while(flag<200)                                        //检验日期是否在1~31 
	{
		if(day>31||day<1)
		    {
			cout<<"日输入错误，请重新输入："<>day;
		    flag++;
		    }
		else
		    break;
	}
	date.setMonth(month);
	date.setYear(year);
	date.setDay(day);
	date.printOne();
	date.printTwo();
	date.printThree();
}

char *transform(int x)
{
	static char str[20];
	switch(x)
	{
	case 1:strcpy(str,"January");break;
	case 2:strcpy(str,"Febuary");break;
	case 3:strcpy(str,"March");break;
	case 4:strcpy(str,"April");break;
	case 5:strcpy(str,"May");break;
	case 6:strcpy(str,"June");break;
	case 7:strcpy(str,"July");break;
	case 8:strcpy(str,"August");break;
	case 9:strcpy(str,"September");break;
	case 10:strcpy(str,"October");break;
	case 11:strcpy(str,"November");break;
	case 12:strcpy(str,"December");break;
    }
	return(str);
}