#include<iostream>

#include<cmath>

using namespace std;

float *solve_equ(float, float, float);//a, b, c

int main()

{

    float a, b, c;

    cout << "enter a, b, c : " << endl;

    cin >> a >> b>>c;

    float *p = solve_equ(a, b, c);

    if (*p == )

    {

        cout << "x1= " << *(p + ) << endl;

        cout << "x2= " << *(p + ) << endl;

    }

    else if (*p = )

    {

        cout << "x1= " << *(p + ) <<"+"<< *(p + ) << 'i' << endl;

        cout << "x2= " << *(p + ) << *(p + ) << 'i' << endl;

    }

    else cout << "False!\n";

    system("pause");

    return ;

}

float *solve_equ(float a, float b, float c)

{

    float delta = b * b -  * a*c;

    float x1, x2, v1, v2, r; //v stands for virtual part; r stands for real part

    float *t;

    if (delta >= )

    {

        int flag=; //to tell the different kinds of solutions;

        x1 = float(-b + sqrt(delta)) / float( * a);

        x2 = float((-b - sqrt(delta))) / float(( * a));

        t = (float *)malloc(sizeof(float) * );

        *t = flag;

        *(t+) = x1;

        *(t+) = x2;

        return t;

    }

    else

    {

        int flag=;

        r = float(-b) / float( * a);

        v1 = float(sqrt(-delta)) / float( * a);

        v2 = -v1;

        t = (float *)malloc(sizeof(float) * );

        *t = flag;

        *(t+) = r;

        *(t+) = v1;

        *(t+) = v2;

        return t;

    }

}