#include <stdio.h>

double Func(double x, double a, double b, double c)
{
    if (a < 0 && x != 0)
        return a*x*x + b * b*x;
    else if (a > 0 && x == 0)
        return x - a / (x - c);
    else
        return 1 + x / c;
}

void main()
{
    double a, b, c, x; int i;

    do
    {
        x = -5;
        printf("Write a, b, c: \n");
        scanf("%lf%lf%lf", &a, &b, &c);

        for (x; x < 5; x = x + 0.5)
        {
            printf("Result : %lf\n", Func(x, a, b, c));
        }
        printf("Continue?\n");
        scanf("%d", &i);
    } while (i);
}