[MSDN Library June 1998] strspn, wcsspn, _mbsspn (100%)

MSDN Library Visual Studio 6.0 > Visual C++ Documentation > Using Visual C++ > Visual C++ Programmer's Guide > Run-Time Library Reference > Alphabetic Function Reference > S

[MSDN Library September 1992] strspn, _fstrspn (64.9665551839465%)

Product Documentation > C/C++ 7.0 > Run-time Library Reference > PART 2 Run-Time Functions > Alphabetic Function Reference > S

[MSDN Library June 1998] StrSpn (13.1052862991581%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Shell and Common Controls > Windows Shell API > Shell Utility APIs > String Functions