71.lambda表达式的递归

#include <iostream>
#include <functional>
using namespace std;

void main()
{
    //&调用外部
    //function<void(void)> fun = [&]()->void {cout << "hello" << endl; fun(); };
    function<void(int)> fun = [&](int i)
    {
        if (i == 0)
        {
            return 0;
        }
        else
        {
            cout << i << endl;
            fun(i-1);
        }
    };
    fun(100);
    system("pause");
}