z20-samostalni rad 1

#include <iostream>

using namespace std;

int main()
{
    int n;
    cout <<"Unesite broj n: ";
    do
    {
        cin >> n;
    }
    while(n < 5 || n > 24);

    for(int i = 0; i < n; i++)
    {
        if(i==0 || i==n-1)
        {
            cout<<"+";
            for(int j=0; j<2*n; j++)
            {
                cout<<"-";
            }
            cout<<"+";
            cout<<endl;
        }
        else if(i ==1 || i==n-2)
        {
            cout<<"|";
            for(int j=0; j<2*n; j++)
            {
                cout<<" ";
            }
            cout<<"|";
            cout<<endl;
        }
        else if(i==2 || i ==n-3)
        {
            cout<<"|  +";
            for(int j=0; j<(2*(n-2))-2; j++)
            {
                cout<<"-";
            }
            cout<<"+  |";
            cout<<endl;
        }
        else
        {
            cout<<"|  |";
            for(int j=0; j<(2*(n-2))-2; j++)
            {
                cout<<" ";
            }
            cout<<"|  |";
            cout<<endl;

        }
    }
    return 0;
}