20 lines
464 B
C
20 lines
464 B
C
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/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Header$ */
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#include <string.h>
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char *
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strstr(register const char *s, register const char *wanted)
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{
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register const size_t len = strlen(wanted);
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if (len == 0) return (char *)s;
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while (*s != *wanted || strncmp(s, wanted, len))
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if (*s++ == '\0')
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return (char *)NULL;
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return (char *)s;
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}
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