E-Sources Informatics

#include <iostream.h>
#include <math.h>
#include <conio.h>
class squreroot {
    friend ostream& operator<<(ostream&, squreroot&);
    friend istream& operator>>(istream&, squreroot&);
public:
    squreroot();
    int disk() { return B*B-4*A*C; }
    float squreroot1() {return -B+sqrt(disk())/(2*A); }
    float squreroot2() {return -B-sqrt(disk())/(2*A); }
    void arithmetic_squreroot();
    void print_disk() { cout << "diskriminan = " << disk() << endl; }
    void print_squreroot() {
        cout << "x1 = " << squreroot1() << endl;
        cout << "x2 = " << squreroot2() << endl;
    }
private:
    int A, B, C;   // input
    float x1, x2;  // squreroot 1 and squreroot 2
};

ostream& operator<<(ostream& out, squreroot& output) {
    output.print_disk();
    if (output.disk() >= 0) output.print_squreroot();
    else out << "Squreroot imajiner";
    return out;
}

istream& operator>>(istream& in, squreroot& input) {
    cout << "Coefficient of rank2   : "; in >> input.A;
    cout << "Coefficient of rank1   : "; in >> input.B;
    cout << "Coefficient of rank0   : "; in >> input.C;
    return in;
}

squreroot::squreroot() {
    cout << "arithmetic squreroot quadratic equation\n";
}

void squreroot::arithmetic_squreroot() {
     if (A == 0) {
        cout << "not a quadratic equation.\n";
        cout << "Value squreroot = " << -C/B; }  else {
          if (disk() > 0) {
             x1 = squreroot1();
             x2 = squreroot2();
          }  else if (disk() == 0) {
                    x1 = squreroot1();
                    x2 = x1;
             }
     }
}

main() {
    squreroot kasus;
    cin >> kasus;
    kasus.arithmetic_squreroot();
    cout << kasus;
    getch();
    return 0;
}