Knoppix and programming

[fingers99]

conio header file can't be included ?? why ??

Because conio.h is a non-ansi compliant and Windows specific header file! You shouldn't be using it!

also some headers are missing ??
Should I install libstdc ?

I've no idea. You hijack someone else's thread and don't tell us what you're trying to do. Our psychic ability is vastly over-rated. Please post your own thread and let us know what you're trying to do.