Function getenv.
A function in Borland's graphics library in TurboC; switches to graphics mode.
It is DOS-specific function in TurboC to call an interrupt. See the built-in help.
Nothing. C is the language, TurboC is an Integrated Developing Environment (IDE).
Either with a text-editor, like Notepad, or with an integrated developping environment (IDE), like TurboC.
TurboC is an Integrated Developing Environment (IDE) for C language.
'Clearscreen' is not used in C language. TurboC has a clrscr function (prototype in conio.h).
int86 is a function in TurboC, header dos.h, consult the built-in help.
Either with a text-editor, like Notepad, or with an integrated developping environment (IDE), like TurboC.
It must be done by a platform-dependent function, it's "clrscr" from conio.h in TurboC
Using TurboC? kbhit and getch are your friends
Platform dependent. I guess you are using TurboC; it has a built-in help-system, and it comes with an example program called bgidemo.c
Well, TurboC is not a language, it is an IDE (Integrated Developing Environment), it was developed by Borland (based on an older program called Wizard C).