C++ 类模板 函数模板

类模板

#include <bits/stdc++.h>
using namespace std;
//多少变量就写多少个
template<typename T1, typename T2>
class Cat
{
public:Cat(){}Cat(T1 name, T2 age){this->age = age;this->name = name;}void print(){cout << this->name << ' ' << this->age << endl;}
private:T1 name;T2 age;
};
//另一个类模版
template<typename T1, typename T2, typename T3>
class Human
{
public:Human(){}Human(T1 name,T2 sex, T3 age){this->age = age;this->name = name;this->sex = sex;}void print(){cout << this->name << ' ' << this->sex << ' ' << this->age << endl;}
private:T1 name;T2 sex;T3 age;
};int main()
{Cat<string, int> cat("狸花猫", 2);Cat<string, int> *p = new Cat<string, int>("布偶猫", 18);cat.print();p->print();Human<string, string, int> person("陈皓林", "男", 18);person.print();return 0;
}

函数模板

#include <bits/stdc++.h>
using namespace std;
//函数模板
template <class T>
T Max(T a, T b)
{return a > b ? a : b;
}int main()
{//函数模板的调用//隐式调用cout << Max(100, 1) << endl;cout << Max(string("aaa"), string("zaa")) << endl;//显式调用，尖括号传类型cout << Max<float>(3.14, 1.14) << endl;return 0;
}