4.auto详解

#include <iostream>
using namespace std;

template <calss T1,class T2>
auto add(T1 t1, T2 t2)
{
    return t1 + t2;
}

//auto自适应数据类型,自动推理
void main()
{
    auto num = 10;
    cout << typeid(num).name() << endl;

    int a[5] = { 1,3,4,5,6 };
    
    for (auto i : a)
    {
        cout << i << endl;
    }

    cin.get();
}