06.12.2017 HW 7,a

#include <iostream>
using namespace std;
void Intersection(int a1, int b1, int c1, int a2, int b2, int c2)
{
    if (((a1 == 0) && (b1 == 0)) || ((a2 == 0)&&(b2 == 0)))
        cout << "there is no such direct";
    else if ((a1 / a2) == (b1 / b2)&&((a1 / a2) == (c1 / c2)))
        cout << "   Straight lines coincide";
    else if ((a1 / a2) == (b1 / b2)&&((b1 / b2) != (c1 / c2)))
        cout << "parallel";
    else if ((a1 / a2) != (b1 / b2))
    {
        cout << "intersect";
        cout << (-1)*(c1*b2 - c2*b1) / (a1*b2 - a2*b1) <<' '<< (-1)*(c2*a1 - c1*a2) / (a1*b2 - a2*b1);
    }
}
    int main ()
    {
        int a1,a2,b1,b2,c1,c2;
        cin >> a1 >> b1 >> c1;
        cin >> a2 >> b2 >> c2;
     Intersection(a1, b1, c1, a2, b2, c2);
     system("pause");
     return 0;

}