What are the differences between a queue and a stack in C++?

What are the differences between a queue and a stack in C++?

In C++, a stack is a Last In First Out (LIFO) data structure, while a queue is a First In First Out (FIFO) structure.

Can you give me an example of how to implement both in C++?

Sure! For a stack, you can use std::stack and for a queue, std::queue. Here's a simple example:

#include <iostream>
#include <stack>
#include <queue>

int main() {
    // Stack example
    std::stack<int> myStack;
    myStack.push(1);
    myStack.push(2);
    std::cout << "Stack top: " << myStack.top() << std::endl;
    myStack.pop();

    // Queue example
    std::queue<int> myQueue;
    myQueue.push(1);
    myQueue.push(2);
    std::cout << "Queue front: " << myQueue.front() << std::endl;
    myQueue.pop();
}

What are the use cases for stacks and queues?

Stacks are often used for function calls and backtracking algorithms, while queues are used in scheduling and buffering.

Are there any performance differences between them?

Both stacks and queues have O(1) time complexity for push and pop operations, but their use cases dictate their performance in practical scenarios.