ROOTS OF QUADRATIC EQUATION

 PROGRAM TO FIND ROOTS OF QUADRATIC EQUATION :

#include<stdio.h>

#include<math.h>

int main()

{

    float a,b,c,n,discriminant,real,imag,r1,r2;

    printf("enter cefficients a,b,c = ");

    scanf("%f%f%f",&a,&b,&c);

    discriminant = (b*b-(4*a*c));

    if(discriminant>0)

    {

        r1=-b + sqrt(b*b-(4*a*c))/(2*a);

        r2=-b - sqrt(b*b-(4*a*c))/(2*a);

        printf("roots = %f\n%f",r1,r2);

    }

    else if(discriminant==0)

    {

        r1=r2=-b/(2*a);

        printf("roots = %f\n%f",r1,r2);

    }

    else

    {

        real=-b/(2*a);

        imag=sqrt(-discriminant)/2*a;

        printf("roots=%f\n%f",real,imag);

    }

    return 0;

}

OUTPUT =

Enter coefficient a,b,c =1

2

1

 roots =  -1.0000

-1.0000