i am interested to know if , in keil c there is an option to insert a piece of assembly code into a c program as in sdcc where there are options like _asm ....codes and _endasm; k.vigneswaran
Yes there is - but you should have a very good understanding of its implications, and a very sound reason for doing so.
I would venture to suggest that, if you need to ask the question, you don't (yet) have the necessary understanding - it is, after all, clearly described in the Manual...