5.decltype类型拷贝

#include <iostream>
using namespace std;

template <class T>
void show(T *p)
{
    //初始化
    decltype(*p) num(*p);
    cout << *p << endl;
}

void main()
{
    auto man("2134");
    cout << typeid(man).name() << "           " << man << endl;
    auto man2(man);
    cout << typeid(man2).name() << "           " << man << endl;

    //获取变量类型,创建类型或指针,并初始化
    decltype(man) man3[2]{ man,man };
    for (auto i : man3)
    {
        cout << typeid(i).name() << "           " << i << endl;
    }

    int num = 10;
    show(&num);
    cin.get();
}