2-2. Initializing Objects with Initializer Lists

Using Uniform Initialization to Construct a vector

#include <iostream>
#include <vector>
using namespace std;
int main()
{
    using MyVector = vector<int>;
    MyVector vectorA(  );
    cout << vectorA.size() << " " << vectorA[] << endl;
    MyVector vectorB( ,  );
    cout << vectorB.size() << " " << vectorB[] << endl;
    MyVector vectorC{ ,  };
    cout << vectorC.size() << " " << vectorC[] << endl;
    return ;
}

１．使用Uniform Initialization可以使得初始化比较方便。

２．using的使用也比较陌生