Ilosc mnozen

#include <iostream>

using namespace std;

int main()
{
    int num, x;
    cout<<"--------------------"<<endl;
    cout<<"    Ilosc mnozen    " <<endl;
    cout<<"--------------------"<<endl;
    cout<<"Milosz Skarzynski"<<endl;
    cout<< ""<<endl;
    cout<<"Podaj ilosc liczb: ";
    cin>>num;
    if(num<1) cout<<"Ilosc liczb musi byc wieksza niz jeden";
    else {
    x=(num*num)-num;
    cout<<"Ilosc mnozen kazdy z kazdym: " << x;
    }
    return 0;
}