c++类模板的简单使用

#include <iostream>#define elmtpe char//在此修改要处理的数据类型using namespace std;/*///////////引用的函数原型//////////////class Compare{private:int x, y;public:Compare(int a = 0, int b = 0):x(a), y(b){}int Max();int Min();};int Compare::Max(){return ((x > y)? x:y);}int Compare::Min(){return ((x < y)? x:y);}*/////////////////////////////////////////template <class elemtype>//声明一个模板，虚拟类型为elemtypeclass Compare{private:elemtype x, y;public:Compare(elemtype a = 0, elemtype b = 0):x(a), y(b){}//创建构造函数，默认值为0elemtype Max();elemtype Min();};template <class elemtype>//由于方法在类外定义，需要指定以下函数也使用的虚拟数据类型elemtype Compare<elemtype>::Max()//返回类型为elemtype类型，"Compare<elemtype>"是一个整体，表示带参数的类，{return ((x > y)? x:y);}template <class elemtype>//同上elemtype Compare<elemtype>::Min()//同上{return ((x < y)? x:y);}int main(int argc, char const *argv[]){elmtpe a,b;cout << "input 2 numbers:" << endl;cin >> a >> b;Compare<elmtpe> cmp(a,b);//使用类模板定义对象cout << "min = " << cmp.Min() << endl << "max = " << cmp.Max() << endl;return 0;}