These two programs show how to print 64-bit integers and convert them to character strings.
#include <stdio.h>
#include <stdlib.h>
static void print64u( unsigned __int64 x) {
unsigned __int64 quot = x / 1000;
if ( quot != 0) {
print64u( quot);
printf( ".%03u", ( unsigned int)( x % 1000));
}
else {
printf( "%u", ( unsigned int)( x % 1000));
}
}
int main( void) {
print64u( 0x100000000);
return EXIT_SUCCESS;
}
#include <stdio.h>
#include <stdlib.h>
static int sprint64u( char* buffer, unsigned __int64 x) {
unsigned __int64 quot = x / 1000;
int chars_written;
if ( quot != 0) {
chars_written = sprint64u( buffer, quot);
chars_written += sprintf( buffer + chars_written, ".%03u", ( unsigned int)( x % 1000));
}
else {
chars_written = sprintf( buffer, "%u", ( unsigned int)( x % 1000));
}
return chars_written;
}
int main( void) {
char buffer[ 32];
sprint64u( buffer, 0x100000000ULL);
puts( buffer);
return EXIT_SUCCESS;
}
© 2008 Novell, Inc. All Rights Reserved.
