C++ Programiranje - pomoc?

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#include <iostream>
#include <cmath>
using namespace std;

int main(){
    float p, k, l;
    float d, x1, x2, y1, y2;
    cout << "Upisi koeficijente [p, k, l]:" << endl;
    cin >> p >> k >> l;
    d=pow((2*k*l-2*p),2)-4*k*k*l*l;
    if(d<0)
            cout << "Ne sijeku se!" << endl;
    else{
         x1=((2*p-2*k*l)+sqrt(d))/(2*k*k);
         x2=((2*p-2*k*l)-sqrt(d))/(2*k*k);
         y1=k*x1+l;
         y2=k*x2+l;
         if(d==0)
                 cout << "Sjeciste je u tocki " << x1 << ',' << y1 << endl;
         else
             cout << "Sjecista su u tockama " << x1 << ',' << y1 << " i " << x2 << ',' << y2 << endl;}
    system("PAUSE");
    return 0;}