Ah bon ? et la fonction _ecvt ?
Utilisation:
/* ECVT.C: This program uses _ecvt to convert a
* floating-point number to a character string.
*/
#include <stdlib.h>
#include <stdio.h>
void main( void )
{
int decimal, sign;
char *buffer;
int precision = 10;
double source = 3.1415926535;
buffer = _ecvt( source, precision, &decimal, &sign );
printf( "source: %2.10f buffer: '%s' decimal: %d sign: %d\n",
source, buffer, decimal, sign );
}
Output
source: 3.1415926535 buffer: '3141592654' decimal: 1 sign: 0
Tout sort de la MSDN de Visual C++ 6.0