C is a independent language
C++ is not platform dependent. The implementation is, but not the language.
Platform-dependent.
Machine-dependent (generally called "platform-dependent")
C language doesn't say anything about graphics, it is platform-dependent.
Platform-dependent, GUI is not part of the standard C libraries.
Programming in C++ means designing and writing a computer program using the C++ programming language. C++ is a high-level, machine-independent language which must be converted into machine-dependent code by a compiler.
Platform-dependent, printf ("%d\n", (int)sizeof (void *))will tell you.
Unix was rewritten in the C Programming language and not in assembly language. The migration from assembly language to the higher-level language C resulted in much more portable software, requiring only a relatively small amount of machine-dependent code to be replaced when porting Unix to other computing platforms. (mihir)
Not part of the language, platform-dependent. Windows: CreateThread Posix: pthread_create in pthread.h
Platform-dependent. But if you are using a PC with Hercules or CGA graphics card, then you are out of luck.
Compiler-dependent, in real life you should never do that, write separated Assembly modules instead.
It isn't. The .NET framework is the backbone of C#, F# and Visual Basic, all of which are dependent upon the Microsoft Windows platform, whereas C is a cross-platform language.