40 lines
771 B
C
40 lines
771 B
C
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/* strrchr( const char *, int c )
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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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#ifndef REGTEST
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char * strrchr( const char * s, int c )
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{
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size_t i = 0;
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while ( s[i++] );
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do
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{
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if ( s[--i] == (char) c )
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{
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return (char *) s + i;
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}
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} while ( i );
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return NULL;
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}
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#endif
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#ifdef TEST
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#include "_PDCLIB_test.h"
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int main( void )
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{
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char abccd[] = "abccd";
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TESTCASE( strrchr( abcde, '\0' ) == &abcde[5] );
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TESTCASE( strrchr( abcde, 'e' ) == &abcde[4] );
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TESTCASE( strrchr( abcde, 'a' ) == &abcde[0] );
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TESTCASE( strrchr( abccd, 'c' ) == &abccd[3] );
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return TEST_RESULTS;
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}
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#endif
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