#include <stdio.h>
#include <math.h>

float SoulSquare (float a, float b, float c, float *x1, float *x2);

int main()
{
    float a,b,c,x1,x2;
    printf ("A = ");
    scanf ("%f",&a);
    printf ("B = ");
    scanf ("%f",&b);
    printf ("C = ");
    scanf ("%f",&c);

    int nRoots =  SoulSquare(a, b, c, &x1, &x2);

    printf("nRoots = %d\n", nRoots);

    if (nRoots > 0)
    {
        if (nRoots == 1)
        {
            printf("x1 = %f\n", x1);
        }
        else
        {
            printf("x1 = %f\n", x1);
            printf("x2 = %f\n", x2);
        }
    }
    else
    {
        printf("No roots!");
    }
}


float SoulSquare (float a, float b, float c, float *x1, float *x2)
{
    float D;
    D = b*b - 4*a*c;

    *x1 = (-b + sqrt (D))/2*a;
    *x2 = (-b - sqrt (D))/2*a;

    if (D < 0)
    {
        return 0;
    }
    if (D == 0)
    {
        return 1;
    }
    if (D > 0)
    {
        return 2;
    }
}