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60 lines
1.5 KiB
60 lines
1.5 KiB
/***
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*strrchr.c - find last occurrence of character in string
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines strrchr() - find the last occurrence of a given character
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* in a string.
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*
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*Revision History:
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* 02-27-90 GJF Fixed calling type, #include <cruntime.h>, fixed
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* copyright.
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* 08-14-90 SBM Compiles cleanly with -W3, removed now redundant
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* #include <stddef.h>
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* 10-02-90 GJF New-style function declarator.
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* 09-03-93 GJF Replaced _CALLTYPE1 with __cdecl.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <string.h>
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/***
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*char *strrchr(string, ch) - find last occurrence of ch in string
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*
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*Purpose:
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* Finds the last occurrence of ch in string. The terminating
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* null character is used as part of the search.
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*
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*Entry:
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* char *string - string to search in
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* char ch - character to search for
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*
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*Exit:
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* returns a pointer to the last occurrence of ch in the given
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* string
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* returns NULL if ch does not occurr in the string
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*
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*Exceptions:
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*
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*******************************************************************************/
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char * __cdecl strrchr (
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const char * string,
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int ch
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)
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{
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char *start = (char *)string;
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while (*string++) /* find end of string */
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;
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/* search towards front */
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while (--string != start && *string != (char)ch)
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;
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if (*string == (char)ch) /* char found ? */
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return( (char *)string );
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return(NULL);
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}
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