zadanie 14

#include <iostream>
#include <math.h>
using namespace std;
float a, b, c, d;

int main()
{
    cout << "wprowadz wspolczynniki rownania kwadratowego" << endl;
    cout << "wprowadz a: " << endl;
    cin >> a;
    cout << "wprowadz b: " << endl;
    cin >> b;
    cout << "wprowadz c: " << endl;
    cin >> c;

    if (a == 0) cout << "rozwiazanie rownania to: " << -c/b << endl;
    else{
        d = b*b-4*a*c;
        if (d > 0) cout << "pierwsze rozwiazanie to: " << (-b-sqrt(d))/(2*a) << " a drugie rozwiazanie to: " << (-    b+sqrt(d))/(2*a) << endl;
        else if (d == 0) cout << "rozwiazanie to: " << -b/(2*a) << endl;
        else cout << "brak rozwiazan" << endl;
     }
}