指向矢量 [英] Pointer to a Vector

问题描述

我有一个指向一个向量的指针。现在，如何通过指针读取向量的内容？我知道这是一个基本的问题，但我不能找到一个答案。（C ++）

I have a pointer to a vector. Now, how can I read the contents of the vector through pointer? I know this is a basic question, but Im unable to find an answer for the same.(C++)

推荐答案

解决方案，这里有一些我想出了：

There are many solutions, here's a few I've come up with:

int main(int nArgs, char ** vArgs)
{
    vector<int> *v = new vector<int>(10);
    v->at(2); //Retrieve using pointer to member
    v->operator[](2); //Retrieve using pointer to operator member
    v->size(); //Retrieve size
    vector<int> &vr = *v; //Create a reference
    vr[2]; //Normal access through reference
    delete &vr; //Delete the reference. You could do the same with
                //a pointer (but not both!)
}

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