pravougaonik

#include <iostream>


int main()
{
    int m, n;
    std::cout<<"Unesite broj n:\n";
    std::cin>>n;
    std::cout<<"Unesite broj m:\n";
    std::cin>>m;

    for (int j=1; j<=n; j++)
    {
        for (int i=1; i<=m; i++)
        {
            if (i==1 || i==m || j==1 || j==n) std::cout<<"*";
            else std::cout<<" ";
        }
        std::cout<<"\n";
    }


    return 0;
}