memchr, wmemchr (Windows CE 5.0)
Developing an Application > Microsoft C Run-time Library for Windows CE > Run-time Library Reference
Finds characters in a buffer.
void *memchr( const void*buf, int c, size_tcount);inline wchar_t *wmemset( wchar_t*buf,
wchar_tc,
size_tcount);
Parameters
- buf
Pointer to buffer. - c
Character to look for. - count
Number of characters to check.
Return Values
If successful, memchr returns a pointer to the first location of c in buf; otherwise, it returns NULL.
Remarks
The memchr function looks for the first occurrence of c in the first count bytes of buf. It stops when it finds c or when it has checked the first count bytes.
Example
/* MEMCHR.C */
#include <memory.h>
#include <stdio.h>
int ch = 'r';
char str[] = "lazy";
char string[] = "The quick brown dog jumps over the lazy fox";
char fmt1[] = " 1 2 3 4 5";
char fmt2[] = "12345678901234567890123456789012345678901234567890";
void main( void )
{
char *pdest;
int result;
printf( "String to be searched:\n\t\t%s\n", string );
printf( "\t\t%s\n\t\t%s\n\n", fmt1, fmt2 );
printf( "Search char:\t%c\n", ch );
pdest = memchr( string, ch, sizeof( string ) );
result = pdest - string + 1;
if( pdest != NULL )
printf( "Result:\t\t%c found at position %d\n\n", ch, result );
else
printf( "Result:\t\t%c not found\n" );
}
Output
String to be searched:
The quick brown dog jumps over the lazy fox
1 2 3 4 5
12345678901234567890123456789012345678901234567890
Search char: r
Result: r found at position 12
Requirements
OS Versions: Windows CE 2.0 and later.
Header: stdlib.h and wchar_ship.h.
Link Library: coredll.dll.
See Also
_memccpy | memcmp | memcpy | memset | strchr
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