number format

[cal]

Hello--I am trying to format numbers so they appear 111,111,111,111 (with
the commas at the
thousands place. Is there a defined function that will format the numbers
with the commas?


thanks in advance


cal

[Jim Argeropoulos]

"cal" <sticks2@earthlink.net> wrote:
>
>Hello--I am trying to format numbers so they appear 111,111,111,111 (with
>the commas at the
>thousands place. Is there a defined function that will format the numbers
>with the commas?
>
>
>thanks in advance
>
>
>cal
I don't know of one in the standard off the top of my head, but this should
work (or something close to it, since I just typed it out).

string&
LongToCommaFormatString (
string& outResult ,
long inSource )
{
outResult = "" ; // For safety

char aBuffer [ 255 + 1 ] ;
char* aIndex = aBuffer ;
int i = 0 ;
while ( inSource )
{
*aIndex = inSource % 10 + '0' ;
inSource /= 10 ;
++aIndex ;
++i ;
if ( i % 2 )
{
*aIndex = ',' ;
++aIndex ;
}
}
while ( aIndex-- != aBuffer )
{
outResult += *aIndex ;
}
}