STL/Stack at master · KnowledgeCenterYoutube/STL · GitHub

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/* *********************************************************
 * KNOWLEDGE CENTER
 * st::stack
 * Detailed Video Explanation: https://youtu.be/WK97Pj0wa7A
********************************************************** */

#include <iostream>
#include <stack>

using namespace std;

int main(){
    stack<int> S;

    for(int i = 0; i < 5; ++i)
        S.push(i);

    cout << "Size = " << S.size() << endl;
    cout << "Top = " << S.top() << endl;

    S.pop();
    S.pop();
    cout << "Size = " << S.size() << endl;
    cout << "Top = " << S.top() << endl;

    if(S.empty())
        cout << "Stack is empty\n";
    else
        cout << "Not Empty\n";

    return 0;
}

/*
size()
=
top()
empty()
push(), pop()
*/