#include <iostream>
#include <string>
template <typename T>
void Swap(T &a, T &b);
template <typename T>
void Swap(T[], T[], int);
void show (int *a, int n);
int main()
{
    using namespace std;
    int a,b;
    double x,y;
    string p,t;
    cout << "please input a(int) and b(int)";
    cin >> a >> b;
    cout << "now a is " << a << " b is " << b <<endl;
    Swap(a,b);
    cout << "function Swap after " << "a is " << a << " b is " << b <<endl;
    cout << "please input x(double) and y(double)";
    cin >> x >> y;
    cout << "now x is " << x << "y is " << y <<endl;
    Swap(x,y);
    cout << "function Swap after " << "x is " << x << " y is " << y <<endl;
    cout << "please input p(string) and t(string)";
    cin >> p >>t;
    cout << "now p is " << p << "t is " << t;
    Swap(p,t);
    cout << "function Swap after " << "p is " << p << " t is " << t;
    cout << "\n模板类重载" <<endl;
    int num1[] {1,2,3,4,5};
    int num2[] {5,4,3,2,1};
    show(num1, 5);
    cout << endl;
    show(num2, 5);
    cout << "Swap after " <<endl;
    Swap(num1,num2,5);
    show(num1,5);
    cout << endl;
    show(num2,5);
    return 0;
}

template <typename T>
void Swap(T &a,T &b)
{
    T temp;
    temp = a;
    a = b;
    b = temp;
}

template <typename T>
void Swap(T a[], T b[],int n)
{
    int temp;
    for(int i=0;i<n;i++){
        temp = a[i];
        a[i] = b[i];
        b[i] = temp;
    }
}

void show(int *a, int n)
{
    for(int i=0;i<n;i++){
        std::cout << a[i] << " ";
    }
}