用地址而不是数字填充队列 [英] Fill a queue with address instead of numbers

问题描述

我想知道您是否可以将地址而不是其内容推送到队列中.例如，我有一个二维数组，我正在移动它.我想跟踪我去过的地方，我不一定关心这些地方的内容.

I was wondering if you can push an address onto a queue instead of its contents. For example I have a 2d array and I'm moving around it. I want to keep track of the spots I've been in and I don't necessarily care about the contents of those spots.

推荐答案

是的，您只需将队列声明为指针队列，例如int*"或您使用的任何类型.代码如下:

Yes, you just have to declare queue as queue of pointers, for example " int* " or whatever type you are using. Here's the code:

#include <iostream>
#include <queue>
using namespace std;


int main() { ios_base::sync_with_stdio(0);

    int a = 3, b = 4, c = 25;

    queue <int*> q;
    q.push(&a);
    q.push(&b);
    q.push(&c);

    while (!q.empty()) {
        cout << *q.front() << "->"; // printing values
        cout << q.front() << ' '; // printing adresses
        q.pop();
    }

    cout << '
';


    return 0;
}

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