- C structure
- C array of structures
- C nested structure
- C file handling
- C fprintf fscanf
- C fputc fgetc
- C fputs fgets
- C fseek
- C rewind
- C ftell
- C preprocessor directive
- C macros
- C preprocessor include
- C preprocessor define
- C preprocessor undefine
- C preprocessor ifdef
- C preprocessor ifndex
- C preprocessor if
- C preprocessor else
- C preprocessor error
- C preprocessor pragma
- C command line argument