PROGRAMME wich solve EQUATION OF THE SECOND DEGREE

Question

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

int main (){
float a, b, c, d, x1, x2, x;

cout << "a=";
cin >> a;
cout << "b=";
cin >> b;
cout << "c=";
cin >> c;

if (a != 0) {
d =( b * b )- (4*a*c);
if (d > 0) {
x1 = (-b - sqrt(d)) / (2 * a);
cout << "x1=" << x1;
x2 = (-b + sqrt(d)) / (2 * a);
cout << "x2=" << x2;
}
else if (d == 0) {
x = -b / (2 * a);
cout << "x=" << x;
}
else { cout << "no solution"; }

}
return 0;
}