函数的重载到模板的重载（例子）2.2

原理链接：C++ 多态 重载 覆盖 2.1

1 函数重载

1.1头文件

#ifndef _TIME_
#define _TIME_

class Time
{
private:
	int hours;
	int minutes;
public:	
	Time();
	Time(int h, int m);
	Time Add( Time &t1,  Time &t2);
	void show(const Time &t);


};

#endif

1.2 实现

#include "time.h"
#include 
  
   
using namespace std;

Time::Time(int h, int m)
{
	hours = h;
	minutes = m;
}
Time::Time()
{
	hours = minutes = 0;
}
Time Time::Add(Time &t1, Time &t2)
{
 Time toatal;
 toatal.minutes = (t1.minutes + t2.minutes)%60;
 toatal.hours = (t1.hours +t2.hours)+(t1.minutes + t2.minutes)/60;
 return toatal;
}

void Time::show(const Time &t3)
{
	cout<<"小时："<
    
    
 
 
    
1.3 main方法 
 
    
#include "time.h"
#include 
     
      
using namespace std;

int main()
{
	Time t1,t;
	Time time1(3,3);
	Time time2(5,90);

	
	t = t1.Add(time1,time2);
	t1.show(t);
	system("pause");
	return 0;
}
     
 
    

 2 模板重载
 
    
2.1头文件
 
    
#ifndef _TIME_
#define _TIME

class Time
{
private:
	int hourse;
	int minutes;
public:
	Time();
	Time(int h, int m);
	Time operator+(const Time &time);
	Time operator-(const Time &time);
	void show(const Time &time) const;
	
};

#endif
 
    

 
 
    
2.2方法实现
 
    
#include "time.h"
#include 
     
      
using namespace std;
 
Time::Time()
{
	hourse = minutes =0;
}
Time::Time(int h, int m)
{
	hourse = h;
	minutes = m;
}
Time Time::operator+(const Time &time)
{
	Time t;
	t.hourse = (time.hourse+hourse)+(time.minutes+minutes)/60;
	t.minutes = (minutes+time.minutes)%60;
	return t;
}
Time Time::operator-(const Time &time)
{
	Time sub;
	Time sub1,sub2;
	sub2.minutes = time.minutes+time.hourse*60;
	/*cout<<"sub2.minutes"<
       
       

 





 
       
2.3main方法
 
       
#include "time.h"
#include 
        
         
using namespace std;

int main()
{
	Time t1(4,35);
	Time t2(2,80);

	Time t,showt;
	t= t1+t2;
	showt.show(t);
	t = t1-t2;
	showt.show(t);
	system("pause");
	return 0;

}
        
 
       
 
       

 注：以上代码都在VS2010 上可正常运行！