[MSDN Library June 1998] ungetc, ungetwc (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 > T Through U
[MSDN Library September 1992] ungetc (36.9230769230769%)
Product Documentation > C/C++ 7.0 > Run-time Library Reference > PART 2 Run-Time Functions > Alphabetic Function Reference > UV