My Digitized Thoughts - Ramen Mukherjee ...

#include<stdio.h>
#include<conio.h>
#include<math.h>
#define pf printf
#define sf scanf
float f(float x)
{
      return (YOUR FUNCTION HERE);
      }
void bisect(float *x,float a,float b,int *itr)
{
     *x=(a+b)/2;
     ++(*itr);
     pf("iteration no %3d X = %7.3f\n",*itr,*x);
     }
main()
{
      int itr=0,maxitr;
      float x,a,b,aerr,x1;
pf("enter the values of a,b,allowed error,maximum iterations\n");
sf("%f %f %f %d",&a,&b,&aerr,&maxitr);
bisect(&x,a,b,&itr);
do
{
                    if(f(a)*f(x)<0)
                    b=x;
                    else
                    a=x;
bisect(&x1,a,b,&itr);
if(fabs(x1-x)<aerr)
{
                   pf("after %d iterations root = %6.3f\n",itr,x1);
                   //return 0;
                   }
x=x1;
}while (itr<maxitr);
pf("solution does not converge\niteration not sufficient");
//return 1;
getch();
}

BY – RAMEN MUKHERJEE

PS : adjust the value of error & output float range to get accurate value efficiently.