程序代码：

 
#include<iostream>
using namespace std;
template <typename type1>
type1 swap(type1 a, type1 b)
{
    a = b;
    cout << "函数模板";
    return 0;
}

 
int main()
{
    int a = 0;
    int b = 1;
    int& la = a;
    int& lb = b;
    ave(la, lb);
    cout << a << "  " << b;
    system("pause");
    return 0;
}

int ave_a = la;
    int ave_b = lb;
    ave_a = ave_b;