====================
First Steps with C11                                                    [TOC]
====================

Some remarks on compiling C code:

- Always compile with the `-Wall` flag to get warnings that often indicate
  errors.
- Compile with `-std=c11` because by default many compiler still use the C89
  standard by default.

For all examples do the following:

- Compile the program, run it and check the exit code.  Use the `-o` flag such
  that the executable is named like the source file without the `.c` suffix.
- Look at the output the C preprocessor produces (call `gcc` with the `-E`
  flag).
- Look at the assembler code produced by the compiler:
    - Use the `-S` flag such that `gcc` stops after translating the C code into
      assembler code.
    - Also use the `-fno-asynchronous-unwind-tables` and `-fomit-frame-pointer`
      flags (otherwise `gcc` produces lots of code we do not want to understand
      at the moment).
- For the ULM we used a different assembly language.  However, there are many
  similarities.  Try to understand the meaning of the assembler code produced
  by `gcc`
- Check how the assembler code produced by `gcc` is different when you compile
  with optimization flags, e.g.
    - Compile with `-O1`
    - Compile with `-O2`
    - Compile with `-O3`


Example on Arrays
=================

:import: session06/vec_sum.c

Example on For loops
====================

:import: session06/for_loop.c


Example on While loops
======================
Explain why the following program will not compile.  Then fix it and proceed as
before:

:import: session06/while_loop.c