六周 项目四 静态成员应用

六周 项目4 静态成员应用

#include<iostream>
#include<cstdlib>
using namespace std;
class Time
{
public:
	//Time(int=0,int=0,int=0);
	void setTime(int h=0,int m=0,int s=0);
	void is_Righttime();
	void show_time( ); //根据is_24和from0，输出适合形式-20:23:5/8:23:5 pm/08:23:05 pm
	void style_time();
	void add_seconds(int); //增加n秒钟
	void add_minutes(int); //增加n分钟
	void add_hours(int); //增加n小时
	static void change24();  //改变静态成员is_24，在12和24时制之间转换
	static void changefrom0(); //改变静态成员from0，切换是否前导0
private:
	static bool is_24; //为true时，24小时制，如20:23:5；为flase，12小时制，显示为8:23:5 pm
	static bool from0; //为true时，前导0，8:23:5显示为08:23:05
	int hour;
	int minute;
	int second;
};
bool Time::is_24=false;
bool Time::from0=false;
void Time::setTime(int h,int m,int s)
{
	hour=h;
	minute=m;
	second=s;
}
void Time::change24()
{
	is_24=true;
}
void Time::changefrom0()
{
	from0=true;
}
void Time::style_time()
{
	int style;
	cout<<"请选择输出格式："<<endl;
	cout<<"1.12小时制，无前导0   2.24小时制，无前导0"<<endl;
	cout<<"3.12小时制，有前导0   4.24小时制，有前导0"<<endl;
	cin>>style;
	switch(style)
	{
	case 1:
		break;
	case 2:
		change24();
		break;
	case 3:
		changefrom0();
		break;
	case 4:
		change24();
		changefrom0();
		break;
	default:
		cout<<"输入有误，请重新输入："<<endl;
		cin>>style;
	}
}
void Time::add_seconds(int s)
{
    minute+=s/60;
    while(minute>=60)
		minute-=60;
		hour+=1;
    hour+=s/3600;
    while(hour>=24)
		hour-=24;
    second+=s%60;
    if(second>59)
    {
        minute=minute+1;
        second-=60;
    }
}
void Time::add_minutes(int m)
{
    hour+=m/60;
    while(hour>=24)
		hour-=24;
    minute+=m%60;
    while(minute>=60)
		minute-=60;
}
void Time::add_hours(int h)
{
    hour+=h%24;
    while(hour>=24)
		hour-=24;
}
void Time::show_time()
{
	bool time;
	if(!is_24&&!from0)
	{
		if(hour>12)
		{
			hour-=12;
			cout<<hour<<":"<<minute<<":"<<second<<"pm"<<endl;
		}
		else
			cout<<hour<<":"<<minute<<":"<<second<<"am"<<endl;
	}
	else if(!is_24&&from0)
	{
		if(hour>12)
		{
			time=false;
			hour-=12;
			if(hour<10)
				cout<<"0"<<hour<<":";
			else
				cout<<hour<<":";
		}
		else
		{
			time=true;
			cout<<hour<<":";
		}
		if(minute<10)
			cout<<"0"<<minute<<":";
		else
			cout<<minute<<":";
		if(second<10)
		{
			if(time)
			    cout<<"0"<<second<<"am"<<endl;
			else
				cout<<"0"<<second<<"pm"<<endl;
		}
		else
		{
			if(time)
			    cout<<second<<"am"<<endl;
			else
				cout<<second<<"pm"<<endl;
		}

	}
	else if(is_24&&!from0)
		cout<<hour<<":"<<minute<<":"<<second<<endl;
	else
	{
		if(hour<10)
				cout<<"0"<<hour<<":";
		else
				cout<<hour<<":";
		if(minute<10)
			cout<<"0"<<minute<<":";
		else
			cout<<minute<<":";
		if(second<10)
			cout<<"0"<<second<<endl;
		else
			cout<<second<<endl;
	}
}
int main()
{
    int chose,sec,min,hour;
	Time T;
    cout<<"请输入时间(HH:MM:SS)："<<endl;
    T.is_Righttime();
    while(1)
    {
        cout<<"请选择以下命令："<<endl;
        cout<<"1.增加n秒    2.增加n分 "<<endl;
        cout<<"3.增加n时    0.退出    "<<endl;
        cin>>chose;
        switch(chose)
        {
        case 0:
            exit(0);
        case 1:
            cout<<"请输入增加的秒数:"<<endl;
            cin>>sec;
            T.add_seconds(sec);
            T.style_time();
            T.show_time();
            break;
        case 2:
            cout<<"请输入增加的分数:"<<endl;
            cin>>min;
            T.add_minutes(min);
            T.style_time();
            T.show_time();
            break;
        case 3:
            cout<<"请输入增加的时数:"<<endl;
            cin>>hour;
            T.add_hours(hour);
            T.style_time();
            T.show_time();
            break;
        default:
            cout<<"输入有误，请重新输入："<<endl;
            cin>>chose;
        }
    }
	return 0;
}
void Time::is_Righttime()
{
	int hour,minute,second;
	char a,b;
	while(1)
	{
		cin>>hour>>a>>minute>>b>>second;
		if(a!=':'||b!=':')
			cout<<"格式错误，请重新输入："<<endl;
		else if(hour<0||hour>24||minute<0||minute>60||second<0||second>60)
			cout<<"时间有误，请重新输入："<<endl;
		else
			setTime(hour,minute,second);
		break;
	}
}