模板类

#include<bits/stdc++.h>
using namespace std;
template<typename T>
class People{
	public:
	People(T name):name_(name){}
	protected:
	T name_;
};
class A:public People<string>{
	public:
	A(string name): People(name){}
	void print(){
		std::cout<<name_<<std::endl;
	}
};
class B:public People<int>{
	public:
	B(int name):People(name){}
	void print(){
		std::cout<<name_<<std::endl;
	}
};
int main(){
	A a("aaa");
	B b(100);
	a.print();
	b.print();
}

模板函数

#include<bits/stdc++.h>
using namespace std;
template<typename T>
void Swap(T &a,T &b){
	T c=a;
	a=b;
	b=c;
}
int main(){
	int a=1,b=2;
	Swap(a,b);
	cout<<a<<" "<<b<<endl;
	string c="111",d="222";
	Swap(c,d);
	cout<<c<<" "<<d<<endl;
}