34 lines
571 B
C
34 lines
571 B
C
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/* strstr( const char *, const char * )
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This file is part of the Public Domain C Library (PDCLib).
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Permission is granted to use, modify, and / or redistribute at will.
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*/
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#include <string.h>
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char * strstr( const char * s1, const char * s2 )
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{
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const char * p1 = s1;
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const char * p2;
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while ( *s1 )
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{
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p2 = s2;
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while ( *p2 && ( *p1 == *p2 ) )
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{
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++p1;
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++p2;
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}
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if ( ! *p2 )
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{
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return ( char * ) s1;
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}
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++s1;
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p1 = s1;
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}
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return NULL;
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}
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