C

This is the low level language used to write operating systems. For in-depth C knowledge, consult C History

My build command

gcc -o myfile -g myfile.c -lm -o makes a new object file -g enables debugging symbols -lm links modules

Building as DLL

gcc -c mydll.c gcc -shared -o mydll.dll mydll.o -c compiles to object file -shared tells it to make a dll -o points it to its result file

Linking an executable to DLL

• If you are in the same directory as your DLL, then you can just build like normal. gcc -o myfile -g myfile.c
• If the DLL is somewhere else, consult: https://opensource.com/article/22/5/compile-code-ldlibrarypath

C++ Compile Process

you need 3 tools:

• Compiler
• Linker
• Archiver From these, you can make an
• Executable
• Dynamic Linked Library

Concepts

• C Declarations
• C Initialization
• Undefined Behaviors
• Preprocessor
• C Command Line Arguments

Datatypes & Special Datatypes

• C Datatypes
• Integer Division 1
• EOF
• C Strings
• C Typecasting
• C Escape Codes
• Pointer
• C Arrays
• C Matrices
• C Structures
• C Unions

Variable Types

• C Macros

Scope

• Local Variables
• Global Variables

Pertinence

• Automatic Variables
• Static Variables
• Extern Variables
• Register Variables

Control Flow

• C While Loops
• C For Loops
• C Conditional Statements
• C Switch Statements
• Do While Loops
• Break
• C goto
• Loop Testing

Expressions

• Expression Precedence
• C Operators
• C Bitwise Logical Operators

Functions/Program

• main
• Void Arguments
• C Functions
• Pass by Value
• C Programs
• Pass by Value Pass by Reference

Memory

• Fragmenting
• Garbage Collection
• Shallow Copy
• Deep Copy

Other

• 2’s Complement

Experienced C Tricks

• Assignments = Expressions
• Several Conditions Inside For Loops
• Typecasting Parameters
• i++ and ++i return usage
• Static Name Collision Avoidance
• Array Of Pointers

Methods

• i++ vs ++i

Standard Library

Cursed C

• char restraints