strlen.c

来自「一组基础的C库的实现」· C语言 代码 · 共 38 行

/* $Id: strlen.c 262 2006-11-16 07:34:57Z solar $ */

/* Release $Name$ */

/* strlen( const char * )

   This file is part of the Public Domain C Library (PDCLib).
   Permission is granted to use, modify, and / or redistribute at will.
*/

#include <string.h>

#ifndef REGTEST

size_t strlen( const char * s )
{
    size_t rc = 0;
    while ( s[rc] )
    {
        ++rc;
    }
    return rc;
}

#endif

#ifdef TEST
#include <_PDCLIB_test.h>

int main()
{
    BEGIN_TESTS;
    TESTCASE( strlen( abcde ) == 5 );
    TESTCASE( strlen( "" ) == 0 );
    return TEST_RESULTS;
}
#endif