声明一个类模板

#include <iostream>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
template<class numtype>
class Compare
{
    public:
        Compare(numtype a,numtype b)
        {
            x=a;
            y=b;
        }
        numtype max()
        {
            return (x>y)?x:y;
        }
        numtype min()
        {
            return (x<y)?x:y;
        }
        private:
            numtype x,y;
};
int main(int argc, char** argv) {
    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;
}