Summary c basics

‍
#1: Getting Started with C Programming | C Programming for
Beginners

Introduction to Compiling and Executing C
Code

Compiling and executing C code is a fundamental aspect of C programming. Here are some
notes on this topic:


​ Compiling C code
● C code needs to be compiled before it can be executed.
● The compiler translates the human-readable C code into machine-readable
assembly language or machine code.
● There are different compilers available, such as GCC (GNU Compiler
Collection), Clang, and Microsoft Visual C++.
● The compiler can be run from the command line or integrated into an
Integrated Development Environment (IDE).
​ Preprocessor
● The preprocessor is a program that processes directives in the C code before
actual compilation.
● Directives are lines that begin with a # symbol, such as #include and
#define.
● The #include directive includes the contents of another file in the C code.
● The #define directive defines a macro, which is a piece of code that can be
substituted multiple times.
​ Compilation stages
● The compilation of C code involves several stages: preprocessing,
compilation, assembly, and linking.
● Preprocessing involves replacing macros and including header files.
● Compilation involves translating the preprocessed code into assembly
language.
● Assembly involves translating the assembly language into machine code.
● Linking involves combining object files and libraries into an executable file.
​ Executing C code
● After the C code has been compiled into an executable file, it can be executed.