c++重要指令 -- std::queue 的使用方法

std::queue 的使用方法

1. 重要的Member functions :

empty    ：Test whether container is empty (public member function )

size       ：Return size (public member function )

front     ：Access next element (public member function )

back     ：Access last element (public member function )

push     ：Insert element (public member function )

pop       ：Remove next element (public member function )

swap     ： Swap contents (public member function )

emplace： Construct and insert element (public member function )

2. 使用Example:

#include <iostream>       // std::cout

#include <queue>          // std::queue

int main ()

{

  std::queue<int> myints;   //宣告

  std::cout << "0. size: " << myints.size() << '\n'; //檢查size

  for (int i=0; i<5; i++) myints.push(i);                //推入元素

  std::cout << "1. size: " << myints.size() << '\n';

  myints.pop();    //彈出元素

  std::cout << "2. size: " << myints.size() << '\n';

  return 0;

}

參考資料  http://www.cplusplus.com/reference/queue/queue/size/