Export (0) Print
Expand All
Expand Minimize

strchr, wcschr, _mbschr

Find a character in a string.

char *strchr(
   const char *string,
   int c 
);
wchar_t *wcschr(
   const wchar_t *string,
   wchar_t c 
);
unsigned char *_mbschr(
   const unsigned char *string,
   unsigned int c 
);

Parameters

string
Null-terminated source string.
c
Character to be located.

Return Value

Each of these functions returns a pointer to the first occurrence of c in string, or NULL if c is not found.

Remarks

The strchr function finds the first occurrence of c in string, or it returns NULL if c is not found. The null-terminating character is included in the search.

wcschr and _mbschr are wide-character and multibyte-character versions of strchr. The arguments and return value of wcschr are wide-character strings; those of _mbschr are multibyte-character strings. _mbschr recognizes multibyte-character sequences according to the multibyte code page currently in use. These three functions behave identically otherwise.

Generic-Text Routine Mappings

TCHAR.H routine _UNICODE & _MBCS not defined _MBCS defined _UNICODE defined
_tcschr strchr _mbschr wcschr

Requirements

Routine Required header Compatibility
strchr <string.h> ANSI, Win 98, Win Me, Win NT, Win 2000, Win XP
wcschr <string.h> or <wchar.h> ANSI, Win 98, Win Me, Win NT, Win 2000, Win XP
_mbschr <mbstring.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_strchr.c
/* 
   This program illustrates searching for a character
   with strchr (search forward) or strrchr (search backward).
*/

#include <string.h>
#include <stdio.h>

int  ch = 'r';

char string[] = "The quick brown dog jumps over the lazy fox";
char fmt1[] =   "         1         2         3         4         5";
char fmt2[] =   "12345678901234567890123456789012345678901234567890";

int main( void )
{
   char *pdest;
   int result;

   printf( "String to be searched:\n      %s\n", string );
   printf( "      %s\n      %s\n\n", fmt1, fmt2 );
   printf( "Search char:   %c\n", ch );

   /* Search forward. */
   pdest = strchr( string, ch );
   result = (int)(pdest - string + 1);
   if ( pdest != NULL )
      printf( "Result:   first %c found at position %d\n", 
              ch, result );
   else
      printf( "Result:   %c not found\n" );

   /* Search backward. */
   pdest = strrchr( string, ch );
   result = (int)(pdest - string + 1);
   if ( pdest != NULL )
      printf( "Result:   last %c found at position %d\n", ch, result );
   else
      printf( "Result:\t%c not found\n", ch );
}

Output

String to be searched:
      The quick brown dog jumps over the lazy fox
               1         2         3         4         5
      12345678901234567890123456789012345678901234567890

Search char:   r
Result:   first r found at position 12
Result:   last r found at position 30

See Also

String Manipulation Routines | strcspn | strncat | strncmp | strncpy | _strnicmp | strpbrk | strrchr | strstr | Run-Time Routines and .NET Framework Equivalents

Show:
© 2014 Microsoft