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ComputingIoFormat

number format

viewed 7222 times and licensed 168 times
Format a number with grouped thousands.
Controller: CodeCogs

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Interface

C++
HTML

Number Format C

 
char*number_format_cdoublevalue
intdp = 0
chardec_point = '.'
charthousand_sep = ',' )
Format a number, by inserting a separator between every 3 digits of the main number and by rounding the result to the specified number of decimal places. The function is modelled on the PHP equivalent of the same name.

Example:

#include <stdio.h>
#include <codecogs/computing/io/format/number_format.h>
 
int main ()
{
  char* a=IO::Format::number_format_c(234.38645,2);
  printf("\n%s", a);
	delete[](a);
}

Output:

234.39

Warning

This function create a dynamic array, ensure you release this memory with delete[]

Note

The routine does not work with very very large numbers.

Parameters

valueThe number to be converted into a text string.
dpThe number of decimal places to truncate the number to. dp has a range from 0 to 19. (default =0)
dec_pointis the character to be used as a decimal point. (default='.')
thousand_sepCharacter to be inserted after every 3 digits. (default=',')

Returns

A character string of the formatted number.

Authors

Will Bateman (March 2005)
Source Code

Source code is available when you agree to a GP Licence or buy a Commercial Licence.

Not a member, then Register with CodeCogs. Already a Member, then Login.


Number Format

Number Format Calculator
 
Add calculator to website or email
 
std::stringnumber_formatdoublevalue
intdp = 0
chardec_point = '.'
charthousand_sep = ',' )
Format a number, by inserting a separator between every 3 digits of the main number and by rounding the result to the specified number of decimal places. The function is modelled on the PHP equivalent of the same name.

This function only differs from that above in that it returns a standard string object, which is automatically released from memory when the object goes out of scrope. Thereby avoiding any possible memory leaks.

Example:

#include <stdio.h>
#include <codecogs/computing/io/format/number_format.h>
 
using namespace IO::Format;
 
int main ()
{
  printf("\n%s", number_format(22.38645,2).c_str());
  printf("\n%s", number_format(122.38245,2).c_str());
  printf("\n%s", number_format(4122.38645,2).c_str());
  printf("\n%s", number_format(-57000000,2,'.',':').c_str());
  printf("\n%s", number_format(-1234.567,2,'.',':').c_str());
  printf("\n%s", number_format(-987.654,2,'.',':').c_str());
}

Output:

22.39
122.38
4,122.39
-57:000:000.00
-1:234.57
-987.65

Note

The routine does not work with very very large numbers.

Parameters

valueThe number to be converted into a text string.
dpThe number of decimal places to truncate the number to. dp has a range from 0 to 19. (default =0)
dec_pointis the character to be used as a decimal point. (default='.')
thousand_sepCharacter to be inserted after every 3 digits. (default=',')

Returns

A character string of the formatted number.

Authors

Will Bateman (July 2007)
Source Code

Source code is available when you agree to a GP Licence or buy a Commercial Licence.

Not a member, then Register with CodeCogs. Already a Member, then Login.