strchr, wcschr, _mbschr

Find a character in a string.

char *strchr( const char *string, int c );

wchar_t *wcschr( const wchar_t *string, wint_t c );

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

For additional compatibility information, see Compatibility in the Introduction.

Libraries

Return Value

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

Parameters

string

Null-terminated source string

c

Character to be located

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

Example

/* 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";

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 );

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

   /* Search backward. */
   pdest = strrchr( string, ch );
   result = pdest - string + 1;
   if( pdest != NULL )
      printf( "Result:\tlast %c found at position %d\n\n", ch, result );
   else
      printf( "Result:\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:   first r found at position 12

Result:   last r found at position 30

String Manipulation Routines

See Also   strcspn, strncat, strncmp, strncpy, _strnicmp, strpbrk, strrchr, strstr