/* round.cpp
   Written by Warren M Myers
   19 Jun 2000
   Usage and explanation below.
*/

#include <iostream.h>


/* function to round any number at a given precision */
/* precision is factor of ten, (1000ths would be 3 precision) */
/* defaults to 2 precision, for money */
/* works for rounding decimals only, not whole numbers */

/* Usage:
         ans = Round(number, d);       --> round number at d
                                           decimal points and
                                           put the result into
                                           the variable ans.
         ans = Round(7.3429562, 2);       --> round the number
                                           7.3429562 at 2
                                           decimal points and
					   put the answer into
					   ans (ans = 7.34)
*/

/* To use in program:
         add this line:
         #include "round.cpp"

         or:
         #include "round.h"
           and compile with multiple .cpp files
*/

long double Round(long double number, unsigned long int precision = 2){
  unsigned long int tenFactor = 10;
  unsigned long int intermediateAnswer = 0;
  unsigned long int loopCount = 0;
  long double result;

  for(;loopCount<precision;loopCount++){
     tenFactor *= 10;
  }

  intermediateAnswer = (number * tenFactor) + .5;
  result = (long double) intermediateAnswer / tenFactor;

  return result;
}