C Programs

Write a program to find real roots of quadratic equation.

#include<stdio.h>

#include<math.h>

void main()

{

    int a,b,c,D;

    float x1,x2,x;

    

    printf("Enter Co-officiant of x^2 : ");

    scanf("%d",&a);

    printf("Enter Co-officiant of x : ");

    scanf("%d",&b);

    printf("Enter Constant : ");

    scanf("%d",&c);

    

    D=(b*b)-(4*a*c);

    

    if(D == 0)

    {

        x=(-b)/(2.0*a);

        printf("x = %.2f",x);

    }

    else if(D > 0)

    {

        x1= (-b+sqrt(D))/(a*2.0);

        x2= (-b-sqrt(D))/(a*2.0);

        printf("\nx = %.2f OR",x1);

        printf(" x = %.2f",x2);

    }

    else

    {

        printf("Roots are complex");

    }

}

Output :