C++ 基础 demos

• decltype 与 typeid的用法

#include <iostream>
using namespace std;
int main()
{
	int a = 0;
	decltype(a) c = a;
	decltype((a)) d = a;
	cout << typeid(a).name() << "-"
		<< typeid(c).name() << "-"
		<< typeid(d).name() << endl;

	return 0;
}