C-CrashCourse

Crash-Course for c programming.

Compiling

I am assuming that you have installed some sort of c compiler and your development environment is already setup. (If not, look at installing mingw for windows. For Ubuntu, run: sudo apt install build-essential and for Arch: sudo pacman -S gcc) To compile all the files in here, you can run: gcc [filename.c] and the compiled output will be stored in a.out or a.exe depending on your system. You can also specify the output filename with: gcc [filename.c] -o [output-filename].

files

01-hello-world.c

Goes over:

• Types of comments
• Basic library includes (stdio.h and stdlib.h)
• Basic main() function
• Printing a string to the terminal with printf()
• Demo of printf() with and without a newline
• Setting an exit status

02-variables.c

Goes over:

• Global variables
• Some variable types: char, int, and double
• Assigning a value to a variable
• Incrementing an integer (both pre- and post-incrementation)
• printf() format specifiers for char, int, and double

03-flow-control.c

Goes over:

• Local variables (briefly)
• A proper integer equality comparison (using ==)
• Two incorrect equality comparisons (using =)
• Demonstration of 0 = false, (not 0) = true
• Types of comparisons (>, >=, <, <=, ==, !=)
• if / else if / else structures
• Introduction to compound statements

04-loops.c

Goes over:

• Basic for loop syntax
• Ability to declare a loop variable before and as part of the for statement
• Backwards counting in a loop
• Infinite loops using for(;;) and while(1)
• while loops
• do-while loops
• Dangers of deleting the do of a do-while loop

05-switch-case.c

Goes over:

• Switch statement syntax
• Switch statements use == equality comparison
• Multiple cases for same section of code
• Default case

06-pointers.c

Goes over:

• Pointers and specifying their type
• Accessing pointer values and what they point at
• Intro to storing strings
• String format specifier for printf()

07-arguments-arrays.c

Goes over:

• Passing arguments to a c program
• Looping over elements in an array
• Creating a statically-sized array
• Basic array indexing

08-functions.c

Goes over:

• Function prototypes
• void-returning functions
• Functions with no arguments
• Functions specified with void argument
• Functions that take multiple parameters
• Basic return values
• Calling functions
• Function body declarations

09-structs.c

Goes over:

• Basic definition of a struct
• Use of a typedef type to create a variable
• Accessing data from within a struct
• Creating a pointer to a struct
• Accessing data contained in a struct from a pointer
• Dereferencing of pointers to get the data being pointed at

To Do

Things I would like to add in the future:

• Dynamic memory allocation
• Variable-length parameters for functions
• Scoping
• Custom header files
• Preprocessor directives
• Primitive variable limits, size(of)s, overflows, casting
• Bitwise operators
• Add conditionals to flow-control
• Pointer arithmetic and casting
• Function pointers
• Multidimensional arrays (double pointers)
• Returning arrays
• enums
• More in-depth strings
• const, static
• Nested structs, padding, unions, bitfields