MPI Taylor series ln(x) function

The Taylor series formula for the ln(x) function is as follows:

Write, compile, and run this Serial ln(x) code (see the following screenshot, which shows Serial ln(x) code) to get a feel of the program:

/*********************************  
 * Serial ln(x) code.           * 
 *                               * 
 * Taylor series representation  * 
 * of the trigonometric ln(x).   *  
 *                               * 
 * Author: Carlos R. Morrison    * 
 *                               * 
 * Date: 1/10/2017               * 
 *********************************/ 
#include <math.h> 
#include <stdio.h> 
int main(void) 
{ 
  Unsigned int n; 
  Unsigned long int k; 
  double A,B,C;  
  double sum=0; 
  long int num_loops; 
  float x,y;   
/******************************************************/ 
  printf("\n"); 
  printf("\n"); 
  printf("Enter...