DOCUMENT:Q71285 26-JUL-2001 [visualc] TITLE :INFO: strtok() Needs No Additional Space to Insert Nulls PRODUCT :Microsoft C Compiler PROD/VER:MS-DOS:5.1,6.0,6.00a,6.00ax,7.0; OS/2:5.1,6.0,6.00a; WINDOWS:1.0,1.5; WINDOWS NT:1.0,2. OPER/SYS: KEYWORDS:kbCRT kbVC100 kbVC150 kbVC200 kbVC400 kbVC500 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - The C Run-Time (CRT), included with: - Microsoft C for MS-DOS, versions 5.1, 6.0, 6.0a, 6.0ax - Microsoft C for OS/2, versions 5.1, 6.0, 6.0a - Microsoft C/C++ for MS-DOS, version 7.0 - Microsoft Visual C++ for Windows, 16-bit edition, versions 1.0, 1.5 - Microsoft Visual C++, 32-bit Editions, versions 1.0, 2.0, 4.0, 5.0 ------------------------------------------------------------------------------- SUMMARY ======= Sometimes it is mistakenly assumed that when the C strtok() function inserts a null character ('\0') into the source string at the end of a token, the length of the source string increases by this new character. This is not the case because an additional character is not actually being inserted. Instead, the delimiter that strtok() found to indicate the end of the token is replaced by the null character. Thus, when declaring or allocating the string of tokens, you do not need to make allowances for the null characters to be inserted. Additional query words: ====================================================================== Keywords : kbCRT kbVC100 kbVC150 kbVC200 kbVC400 kbVC500 Technology : kbVCsearch kbAudDeveloper kbCRT Version : MS-DOS:5.1,6.0,6.00a,6.00ax,7.0; OS/2:5.1,6.0,6.00a; WINDOWS:1.0,1.5; WINDOWS NT:1.0,2.0,4.0,5.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.