函数模板 类模板

#include<iostream>
#include<cstring>
#include<vector>
#include<algorithm>
using namespace std;
template<typename T>
T fun(T a,T b){
return (a>=b)?a:b;
}
int main(){
int a=1,b=2;
int tmp=fun(a,b);//直接调用，自动取代
cout<<tmp;
return 0;
}

template<typename T1,typename T2>

using namespace std;
template<class T>
class Cmp{
public:
Comp(T a,T b){
x=a;
y=b;
}
private:
T x,y;
};
int main(){
Comp<int> comp(1,2);
return 0;
}