/*

        Author : Ashish Yadav

        Title : Roots of a Quadratic equation

        Compiler : GNU-GCC Compiler (Code::Blocks v16.01)

        Os : Windows 10 Pro

 */

#include <stdio.h>

#include <math.h>

int main()

{

     double a,b,c,d,e,f,root1,root2,i;

     printf("\n----------Roots of A quadratic Equation-------------\n");

     printf(" Please enter value of (except 0) a \n");

     scanf("%lf",&a);

     if (a==0)

    {

        printf("\n value of a cannot be 0");

    } else

    {

     printf(" Please enter  value of b \n");

     scanf("%lf",&b);

     printf(" Please enter  value of c \n");

     scanf("%lf",&c);

     d = b*b-4*a*c;

     e = -b/(2*a);

     i = sqrt(-d)/(2*a);

     if (d>0)

     {

     f = sqrt(d)/(2*a);

     root1 = e+f;

     root2 = e-f;

     printf("\n--------------------------------------------------\n");

     printf("\n Real roots are :%lf,%lf",root1,root2);

     }

     else

     if (d==0)

     {

     printf ("Root is:%lf",e);

     } else

     {

     printf("\n----------------------------------------------------\n");

     printf("\n imaginary roots are:%lf+%lfi,%lf-%lfi",e,i,e,i);

     }

    }

    getch();

    return 0;

}