حل الكويز اذا حد متغلق

#include <iostream>
using namespace std;
class stackone
{
private:
    int *ar;
    int top, siz;
public:
    stackone()
    {
        top=-1;
        cout<<endl<<"Enter stack size ";
        cin>>siz;
        ar = new int[siz];
    }
    void push(int m)
    {
        if(top==siz-1)
            cout<<endl<<" Stack overflow no push ";
        else
        {
            top++;
            ar[top]=m;
            cout<<endl<<m<<" Push successful ";
        }
    }
    void printTop()
    {
        if(top == -1)
        {
            cout<<"Stack is EMPTY"<<endl;
        }
        else{

            int t = ar[top];
            cout<<"Top value is "<<t<<endl;
        }

    }
    int getSize()
    {
        if(top == -1)
        {
            cout<<"Stack is EMPTY"<<endl;
        }
        else
        {
        int i =0 ;
        for(i=0; i<=top; i++)
        {

        }
        cout<<"Stack size is "<<i<<endl;
    }
    }
};
int main()
{
    stackone *ob = new stackone();
    int choice;
    do
    {
        cout<<endl<<"\t STACK OPERATIONS ";
        cout<<endl<<"1. Push a value ";
        cout<<endl<<"2. Print topmost value ";
        cout<<endl<<"3. Print number of values in stack ";
        cout<<endl<<"Select choice [4 to exit ] ";
        cin>>choice;
        switch(choice)
        {
        case 1:


            int n;
            cout<<"Enter value to push : ";
            cin>>n;
            ob->push(n);
            break;


        case 2:
            ob->printTop();
            break;
        case 3:
            ob->getSize();
            break;
        default:
            cout<<endl<<" give 4 for exit ";
        }
    }
    while(choice !=4);
    cout<<endl<<"Thanks for testing me ";

    return 0;
}