#include <iostream>

using namespace std;

template<class T> void Swap(T &a, T &b);  //模板①：交换基本类型的值

template<typename T, unsigned N> void Swap(T (&a)[N], T (&b)[N]);  //模板②：交换两个数组

template<typename T, unsigned N> void printArray(T (&arr)[N]);  //打印数组元素

int main(){

    //交换基本类型的值

    int m = , n = ;

    Swap(m, n);  //匹配模板①

    cout<<m<<", "<<n<<endl;

    //交换两个数组

    int a[] = { , , , ,  };

    int b[] = { , , , ,  };

    Swap(a, b);  //匹配模板②

    printArray(a);

    printArray(b);

    return ;

}

template<class T> void Swap(T &a, T &b){

    T temp = a;

    a = b;

    b = temp;

}

template<typename T, unsigned N> void Swap(T (&a)[N], T (&b)[N]){

    T temp;

    for(int i=; i<N; i++){

        temp = a[i];

        a[i] = b[i];

        b[i] = temp;

    }

}

template<typename T, unsigned N> void printArray(T (&arr)[N]){

    for(int i=; i<N; i++){

        if(i == N-){

            cout<<arr[i]<<endl;

        }else{

            cout<<arr[i]<<", ";

        }

    }

}