README.md

ws_cpp

C Preprocessor Workshop for junior developers

What included

• .pptx - presentation in PowerPoint

• .pdf - presentation in PDF

• .c, .h - short lessons and demo

How to out preprocessed code

Use cpp

    cpp <source file name> -o <output file name>

For example:

    cpp 1_simple.c -o 1_simple.cpp

Use gcc

    gcc -E <source file name> -o <output file name>

For example:

    gcc - E 1_simple.c -o 1_simple.cpp

How to define macro from command line

If you need define macro TEST you should pass to gcc/cpp key -D as defined in the following example:

    gcc 1_simple.c -DTEST -o 1_simple.o

If you need setup some values you should use quotes as in following example (equals to #define TEST 4):

    gcc 1_simple.c -DTEST="4" -o 1_simple.o