53 lines
890 B
C
53 lines
890 B
C
/*
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FUNCTION
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<<strpbrk>>---find characters in string
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INDEX
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strpbrk
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SYNOPSIS
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#include <string.h>
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char *strpbrk(const char *<[s1]>, const char *<[s2]>);
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DESCRIPTION
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This function locates the first occurence in the string
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pointed to by <[s1]> of any character in string pointed to by
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<[s2]> (excluding the terminating null character).
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RETURNS
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<<strpbrk>> returns a pointer to the character found in <[s1]>, or a
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null pointer if no character from <[s2]> occurs in <[s1]>.
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PORTABILITY
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<<strpbrk>> requires no supporting OS subroutines.
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*/
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#include <string.h>
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char *
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_DEFUN (strpbrk, (s1, s2),
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_CONST char *s1 _AND
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_CONST char *s2)
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{
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_CONST char *c = s2;
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if (!*s1)
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return (char *) NULL;
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while (*s1)
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{
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for (c = s2; *c; c++)
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{
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if (*s1 == *c)
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break;
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}
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if (*c)
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break;
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s1++;
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}
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if (*c == '\0')
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s1 = NULL;
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return (char *) s1;
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}
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