4. Menghitung Akar Persamaan Kuadrat

#include <iostream>
#include <cmath>

// NAMA : Dhafin Shabir Alfatih
// NIM. : 3420230036

using namespace std;

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

    cout << "Masukkan nilai a: ";
    cin >> a;
    cout << endl;
    cout << "Masukkan nilai b: ";
    cin >> b;
    cout << endl;
    cout << "Masukkan nilai c: ";
    cin >> c;
    cout << endl;
    
    diskriminan = (b * b) - (4 * a * c);

    if (diskriminan >= 0) {
        x1 = (-b + sqrt(diskriminan)) / (2 * a);
        x2 = (-b - sqrt(diskriminan)) / (2 * a);

        cout << "x1 = " << x1 << endl;
        cout << "x2 = " << x2 << endl;
    } else {
        cout << "Akar tidak real (bilangan kompleks)" << endl;
    }

    return 0;
}