Проверти правильность программы на C++

#include <iostream>
#include <conio.h>
#include <math.h>

using namespace std;

float calcDiscriminant(float a, float b, float c){
float Discriminant = (b*b) - 4*a*c;
return sqrt(Discriminant);

}

int main () {

float a, b, c;

cout << "Please enter your nember:\n";
cout << "\na = ";
cin >> a;
cout << "\nb = ";
cin >> b;
cout << "\nc = ";
cin >> c;
cout << "\nYou Discriminant: " << calcDiscriminant(a, b, c);
float D = calcDiscriminant(a, b, c);

if(D > 0){

cout << "\nDiscriminant > 0";

}
else if(D < 0){

cout <<"\nDiscriminant < 0";

}

float x1, x2;

float x[2];
x[1] = (-1*b) - calcDiscriminant(a, b, c);
x[2] = (-1*b) + calcDiscriminant(a, b, c);

cout << "\n\nx1 = " << x[1] / (2*a);
cout << "\n\nx2 = " << x[2] / (2*a);

getch();
return 0;

}