//Program za racunanje korena kvadratne enacbe//
    #include 
    #include 
    main ()
    {
    float a,b,c,d,x1,x2;
    cout << "\n Vnesi a=";
    cin >> a;
    cout << "\n Vnesi b=";
    cin >> b;
    cout << "\n Vnesi c=";
    cin >> c;
    d=(b*b)-(4*a*c);
     if (d>0)
      {
      x1=-b+sqrt(d)/2*a;
      x2=-b-sqrt(d)/2*a;
      cout << "\n x1=" <<x1;
      cout << "\n x2=" <<x2;
      }
       else
        {
        d=d*-1;
        x1=-b/2*a;
        cout << "\n x1=" <<x1<<"-"<<sqrt(d)<<"i";
        }
         if(d==0)
         {
         cout <<"\n Diskriminanta je 0";
         cout <<"\n x12=" <<(-b/2*a);
         }
    return 0;
    }