README.md

C Programming

C programming and debugging notes from various resources including C Programming for Beginners provided by Portfolio Courses and Advanced C Programming by Jason Fedin.

Table of Contents

• Hello World first C Program

• Input Processing Output (IPO) Model example

• Variable types and using printf & scanf

  • double and float variables
  • Modifiers
  • scanf use with float and double
  • char variable
  • printf and scanf with char variables

• Enums

• printf

  • printf special characters
  • printf placeholder formatting options
  • printf placeholders specifiers
  • printf field width
  • printf flags
  • printf real number precision

• scanf

  • Use scanf to read in multiple numbers

• Arithmetic operators

  • Common operators
  • Modulus operator

• If statements

  • else statement
  • if else if statements

• Relational operators

• Logical operators

  • And operator
  • Or operator
  • Not operator
  • Operator precedence

• While loops

  • Incrementing a variable
  • Find average of numbers using while loop
  • Indefinite loop using a while loop
  • Infinite loop
  • while loop with break
  • while loop with continue

• Do while loops

  • Simple do while loop example
  • Do while loop used to validate user input

• For loops

  • Simple for loop example
  • for loop with break
  • for loop with continue

• Meters to Feet conversion program

• printf placeholder fields

• Switch statements

• Arrays

  • Creating an Array
  • Accessing an Array index
  • Using a for loop with Arrays
  • Updating an Array element
  • Initialising Arrays
  • Common errors using Arrays
  • Reverse an array program

• Strings

  • Printing strings
  • Printing a char array
  • Initialise char array alternative
  • Finding the length of a string
  • Counting characters in a string
  • string.h library
  • Finding the length of a string using strlen
  • String concatenation using strcat
  • Checking for string equality using strcmp
  • Finding the uppercase and lowercase letters in a string
  • Convert uppercase letters to lowercase

• Functions

  • Variable scope
  • Function definition
  • Void functions
  • Passing arrays to functions
  • Recursion

• Pointers

  • Pass by pointer
  • Pointer notation verses array notation

• Dynamically allocated memory

  • malloc()
  • calloc()
  • free()
  • realloc()

• Typedefs

• Structs

• Unions

• 2D arrays

  • Nested loops
  • Using constants
  • Populating a 2D array using scanf
  • 2D arrays and functions
  • 2D array pass by reference

• Main function return values

• Command-line arguments

  • Casting
  • Validating command-line arguments

• Type casting

• File Input/Output

  • Writing to files on the local filesystem
  • Using loops to write to file
  • Adding content to a file
  • Reading text from a file using fgets()
  • Reading integers from a file using fscanf()
  • Reading integers from a file using fgets()

• Constants

• Global scope variables

  • Matching global scoped and function scoped variable names

• User inputs with spaces

• Debugging with gdb

• External References

External References

• This is a reference of the core C language constructs
• C Data types
• printf
• C_Programming - Simple_input_and_output
• C Library - <string.h>
• C Library - <ctype.h>
• C - File I/O
• geeksforgeeks.org | C Programming Language Tutorial
• geeksforgeeks.org | Error Handling in C

Books

• Programming in C by Stephen G. Kochan