Exercise 1

C Programs

This exercise is intended to check that you have a functioning environment with the C programming language on your workstation, for example, an editor like ee or vim and a compiler like gcc (GNU Compiler Collection) or clang (part of the LLVM project).

The shell command date outputs the current date and time:

date
Thu Jan  1 00:00:00 UTC 1970

Write two C programs that also output the current time in a similar way using:

• time(), followed by ctime()

• time(), followed by localtime() and strftime()

If you need information about the C functions, the following man commands will help you:

man 3 time
man 3 strftime

time() + ctime()

time() + localtime() + strftime()