【实验】vector性质

#include <iostream>
#include <vector>

using namespace std;

vector <int >a(1);//vector<struct>name(size)
int main()
{
    a[0]=1;//input
    a[1]=2;
    cout<<a[0]<<endl;//output the first data
    cout<<a.size()<<endl;//output the size of the vector
    //a.resize(1);//resize the vector
    cout<<a.size()<<endl;
    cout<<a[1]<<endl;
    return 0;
}

输出为

1

1

1

2

则说明即使超界访问，vector也可以拥有容错性。