用成员函数求解方程C++

#include <iostream>

class Equation {
private:
    double a, b, c;

public:
    Equation(double a, double b, double c) {
        this->a = a;
        this->b = b;
        this->c = c;
    }

    void solve() {
        double discriminant = b * b - 4 * a * c;
        if (discriminant > 0) {
            double x1 = (-b + sqrt(discriminant)) / (2 * a);
            double x2 = (-b - sqrt(discriminant)) / (2 * a);
            std::cout << "The equation has two real roots: x1 = " << x1 << ", x2 = " << x2 << std::endl;
        } else if (discriminant == 0) {
            double x = -b / (2 * a);
            std::cout << "The equation has one real root: x = " << x << std::endl;
        } else {
            std::cout << "The equation has no real roots." << std::endl;
        }
    }
};

int main() {
    double a, b, c;
    std::cout << "Enter the coefficients of the equation (ax^2 + bx + c = 0): ";
    std::cin >> a >> b >> c;

    Equation equation(a, b, c);
    equation.solve();

    return 0;
}