[MSDN Library April 2000] strcspn, wcscspn, _mbscspn (100%)
MSDN Library - April 2000 > Visual Studio 6.0 Documentation > Visual C++ Documentation > Using Visual C++ > Visual C++ Programmer's Guide > Run-Time Library Reference > Alphabetic Function Reference > S
[MSDN Library September 1992] strcspn, _fstrcspn (65.3846153846154%)
Product Documentation > C/C++ 7.0 > Run-time Library Reference > PART 2 Run-Time Functions > Alphabetic Function Reference > S
[MSDN Library April 2000] StrCSpn (16.8189102564103%)
MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows Shell > Shell Reference > Shell Lightweight Utility APIs > String Functions