Next: Advantages of using UNIX with C Up: Programming in C Previous: Running Make . There is a very close link between C and most operating systems that run our C programs. ... We have to use UNIX to maintain our file space, edit, compile and run programs etc. ... Advantages of using UNIX with C . Using UNIX System Calls and Library Functions . File and Directory Manipulation . Directory handling functions . ... Piping in a C program . ... Interrupts and Signals . ...