#include <iostream>
#include <cmath> // Използва се за решаване на корени
using namespace std;
int main() {
    int a, b, c; // Това са променливите за решаване на уравнението
    char da_produlja_li;  // Това е променлива с която ще направим избор
 
    cout << "Решаване на квадратно уравнение Ax^2 + Bx + C = 0" << endl;
 
    // Тука въвеждаме променливите
    cout << "Въведете a: ";
    cin >> a;
    cout << "Въведете b: ";
    cin >> b;
    cout << "Въведете c: ";
    cin >> c;
 
    // Пресмятане на дискриминанта
    int D = b * b - 4 * a * c;
 
    // Търсим корените на уравнението
    if (D > 0) 
    {
        float x1 = (-b + sqrt(D)) / (2 * a);
        float x2 = (-b - sqrt(D)) / (2 * a);
        cout << "Уравнението има два реални корена: x1 = " << x1 << ", x2 = " << x2 << endl;
    } 
    else 
    if (D == 0) 
    {
        float x = -b / (2 * a);
        cout << "Уравнението има един реален корен: x = " << x << endl;
    } 
    else 
    {
        cout << "Уравнението няма реални корени." << endl;
    }
 
    // Това е да пита дали потребителят желае да продължи
    cout << "Желаете ли да продължите? (y/n): ";
    cin >> da_produlja_li;
 
    if (da_produlja_li == 'y' || da_produlja_li == 'Y') 
    {
        cout << "Моля, стартирайте програмата отново за ново уравнение." << endl;
    } 
    else 
    {
        cout << "Благодаря, че използвахте програмата!" << endl;
    }
 
    return 0;
}

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