Sets a type double variable to 1.0/3.0 and a type float variable to 1.0/3.0, display result three times - C Operator

C examples for Operator:Arithmetic Operator

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Introduction

  • once showing four digits to the right of the decimal,
  • once showing 12 digits to the right of the decimal,
  • once showing 16 digits to the right of the decimal.

Also include float.h and display the values of FLT_DIG and DBL_DIG.

Demo Code

#include <stdio.h>
#include <float.h>

int main(void)
{
  double db_one_third = 1.0 / 3.0;
  float ft_one_third = 1.0 / 3.0;

  printf("Float                Double              \n");
  printf("-------------------- --------------------\n");
  printf("%-20.4f %-20.4f\n", ft_one_third, db_one_third); // show 4 digits
  printf("%-20.12f %-20.12f\n", ft_one_third, db_one_third); // show 12 digits
  printf("%-20.16f %-20.16f\n", ft_one_third, db_one_third);
  printf("\n");//from  w  w w  .  j av a  2 s.  co  m
  printf("FLT_DIG: %d\n", FLT_DIG);
  printf("DBL_DIG: %d\n", DBL_DIG);

  /* both float and double are accurate to at least the amount of sig figs specified by FLT_DIG and DBL_DIG */

  return 0;
}

Result


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