_swab
Visual Studio .NET 2003
Swaps bytes.
void _swab( char *src, char *dest, int n );
Parameters
- src
- Data to be copied and swapped.
- dest
- Storage location for swapped data.
- n
- Number of bytes to be copied and swapped.
Remarks
The _swab function copies n bytes from src, swaps each pair of adjacent bytes, and stores the result at dest. The integer n should be an even number to allow for swapping. _swab is typically used to prepare binary data for transfer to a machine that uses a different byte order.
Requirements
| Routine | Required header | Compatibility |
|---|---|---|
| _swab | <stdlib.h> | Win 98, Win Me, Win NT, Win 2000, Win XP |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
Example
// crt_swab.c
#include <stdlib.h>
#include <stdio.h>
char from[] = "BADCFEHGJILKNMPORQTSVUXWZY";
char to[] = "..........................";
int main()
{
printf( "Before: %s\n %s\n\n", from, to );
_swab( from, to, sizeof( from ) );
printf( "After: %s\n %s\n\n", from, to );
}
Output
Before: BADCFEHGJILKNMPORQTSVUXWZY
..........................
After: BADCFEHGJILKNMPORQTSVUXWZY
ABCDEFGHIJKLMNOPQRSTUVWXYZ
See Also
Buffer Manipulation Routines | Run-Time Routines and .NET Framework Equivalents
