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C Code for Solution of a quadratic equation

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/*Solution of a quadratic equation*/
#include<math.h>
#include<stdio.h>
int main()
{
    float a, b, c, d, x1, x2, rp, imp;
/*consider the quadratic equation as ax^2+bx+c=0*/
    printf("Enter the values of a:");
    scanf("%f", &a);
    printf("Enter the values of b:");
    scanf("%f", &b);
    printf("Enter the values of c:");
    scanf("%f", &c);
    d=b*b-4*a*c;
    printf("\n The value of discriminant is : %f",d);
    if(d>=0)
    {
        printf("\n The root is real");
        x1=(-b+sqrt(d))/(2*a);
        x2=(-b-sqrt(d))/(2*a);
        printf("\n The 1st root is: %f", x1);
        printf("\n The 2nd root is: %f\n", x2);
    }
    else
    {
        printf("\n The root is complex");
        rp=-b/(2*a);
        imp=sqrt(abs(d))/(2*a);
        printf("\n The 1st root is: %f+%fi", rp,imp);
        printf("\n The 2nd root is: %f-%fi\n", rp,imp);
    }
    return(0);
    }
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