P121 12

<img src="https://img-blog.youkuaiyun.com/20150420134858324?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvWXVTb25nNDg2OQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />#include <iostream> 
using namespace std; 
template<class numtype> 
class Compare 
{public:  
Compare(numtype a,numtype b); 
numtype max(); 
numtype min(); 
private:  
numtype x,y; 
};  
template <class numtype>  
Compare<numtype>::Compare(numtype a,numtype b) 
{x=a;y=b;}  
template <class numtype>  
numtype Compare<numtype>::max() 
{return (x>y)?x:y;}  
template <class numtype>  
numtype Compare<numtype>::min() 
{return (x<y)?x:y;} 
int main()  
{Compare<int> cmp1(3,7); 
cout<<cmp1.max()<<" is the Maximum of two integer numbers."<<endl;  
cout<<cmp1.min()<<" is the Minimum of two integer numbers."<<endl<<endl; 
Compare<float> cmp2(45.78,93.6);  
cout<<cmp2.max()<<" is the Maximum of two float numbers."<<endl; 
cout<<cmp2.min()<<" is the Minimum of two float numbers."<<endl<<endl; 
Compare<char> cmp3('a','A');  
cout<<cmp3.max()<<" is the Maximum of two characters."<<endl; 
cout<<cmp3.min()<<" is the Minimum of two characters."<<endl;  
return 0; 
}