第四周任务二

 

class Time    
{    
public:    
    void set_time( );       
    void show_time( );     
    void add_seconds(int);    
    void add_minutes(int);    
    void add_hours(int) ;    
private:     
    bool is_time(int, int, int);    
    int hour;    
    int minute;    
    int sec;    
};    
class Time  
{  
public:  
    void set_time( );     
    void show_time( );   
    void add_seconds(int);  
    void add_minutes(int);  
    void add_hours(int) ;  
private:   
    bool is_time(int, int, int);  
    int hour;  
    int minute;  
    int sec;  
};  
 

源文件。

[cpp] view plaincopyprint?#include <iostream>   
  
#include "ssss.h"   
  
using namespace std;  
  
int main( )    
{    
    int h,m,s;    
    Time t1;      
    Time &t2=t1;    
    t1.set_time( );     
    cout << "需要增加的秒数" << endl;    
        
    cin >> s;    
        
    t1.add_seconds(s);    
        
    cout << "需要增加的分钟数" << endl;    
        
    cin >> m;    
        
    t1.add_minutes(m);    
        
    cout << "需要增加的小时数" << endl;    
        
    cin >> h;    
        
    t1.add_hours(h);    
        
    t2.show_time();    
        
    t2.show_time( );    
  
    system("pause");  
    return 0;    
}    
    
void Time::set_time( )     
{    
    char c1,c2;    
    cout<<"请输入时间(格式hh:mm:ss)";    
    while(1)    
    {    
        cin>>hour>>c1>>minute>>c2>>sec;    
        if(c1!=':'||c2!=':')    
            cout<<"格式不正确，请重新输入"<<endl;    
        else if (!is_time(hour,minute,sec))    
            cout<<"时间非法，请重新输入"<<endl;    
        else     
            break;    
    }    
}    
    
void Time::show_time( )          
{    
    cout<<hour<<":"<<minute<<":"<<sec<<endl;    
}    
    
bool Time::is_time(int h,int m, int s)    
{    
    if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)    
        return false;    
    return true;    
}     void Time::add_seconds(int n)    
{    
     sec = sec + n;    
         
     while(sec >= 60)    
     {    
               sec = sec - 60;    
               minute++;    
     }     
}    
void Time::add_minutes(int n)    
{    
     minute = minute + n;    
         
     while(minute >= 60)    
     {    
         minute = minute - 60;    
         hour++;    
     }    
}    
void Time::add_hours(int n)    
{    
    hour = hour + n;    
}