使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推送到队列而不是其内容。例如，我有一个2d阵列，我正在四处移动。

解决方案

p>是的，你只需要将队列声明为指针队列，例如int *或你使用的任何类型。这里是代码：

  #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）; 
 qp.ush（& c）; 
 
 while（！q.empty（））{
 cout< * q.front（）<<  - >; // printing values 
 cout<< q.front（）<< ''; // printing adresses 
 q.pop（）; 
} 
 
 cout<< '\\\
'; 
 
 
 return 0; 
} 
  

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.

解决方案

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 << '\n';


    return 0;
}

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