data-structures-and-algorithms/data_structures/stack/stack.cpp at main · HexCoderTech/data-structures-and-algorithms · GitHub

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#include <cstdio>
#include <iostream>

using namespace std;

class Stack{
private:
    int _size;
    int _head;
    int* _data;
public:
    Stack(int size){
        _size = size;
        _head = -1;
        _data = new int[size];
    }
    void push(int data){
        if (_head == _size - 1)
        {
            cout << "Stack full" << endl;
            return;
        }
        _data[++_head] = data;
    }
    int& head(){
        if (_head == -1)
            throw exception();
        return _data[_head];
    }
    int& pop(){
        if (_head == -1)
            throw exception();
        return _data[_head--];
    }

    void print(){
        for (int i = 0; i <= _head; i++){
            cout << _data[i] << " ";
        }
        cout << endl;
    }
};

int main(){

    Stack s(10);
    s.push(1);
    s.push(2);
    s.push(3);
    s.push(4);
    s.push(5);

    cout << s.head() << endl;
    s.print();

    return 0;
}