Numerical Methods for Engineers(C-program code for Newton Raphson Method for a perticular function)

#include<stdio.h>
#include<conio.h>
#include<math.h>
double fx(double x) //Given the function is x3+4x-10
{
    double f;
    f=(x*x*x)+(4*x*x)-10;
    return f;
   
}
double fdx(double x) //Differentiation of given function is 3x2+8x
{
    double f;
    f=(3*x*x)+(8*x);
    return f;
   
}
main()
{
    float x,xn,eps=0.00001;
   
    printf("\nf(x)=x3-4x2-10");
    printf("\nf'(x)=3x2-8x");
    printf("\nenter value of x=");
    scanf("%f",&x);
        while(fabs(fx(x))>eps)
        {
            printf("pr");
            xn=x-(fx(x)/fdx(x));
            x=xn;
        }
        printf("%f\n",xn);
    }