C Programming
C core
This category covers the fundamental concepts of the C programming language.
C lang intro
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C key features
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C language standards
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C "hello world"
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C compilation process
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C code comments
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C language tokens
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C reserved words
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C variables & constants
This category explores variables, constants, scope, and linkage in C.
C variables intro
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C constants intro
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Const qualifier
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Declaring constants
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C scope rules
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Linkage (internal/external)
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Global variables
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C data types
This category delves into the various data types available in C and their properties.
C data types intro
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C literals
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Escape sequences
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Bool type in C
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Integer promotion
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Char arithmetic
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C type conversion
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C input/output (I/O)
This category covers how C programs interact with users and files for input and output operations.
Basic C I/O
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Format specifiers
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Printf usage
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Scanf usage
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C scansets
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Formatted/unformatted I/O
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C operators
This category explains the various operators C provides for performing calculations and manipulations.
C operators intro
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Arithmetic ops
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Unary ops
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Relational ops
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Bitwise ops
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Logical ops
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Assignment ops
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Increment/decrement ops
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Ternary op (?:)
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Sizeof op
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Operator precedence/associativity
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C control flow & decisions
This category describes how to control the flow of execution in C programs using conditional statements and loops.
C decision making (if/else)
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If statement
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If-else statement
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If-else if ladder
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Switch statement
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Switch with ranges
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C loops intro
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For loop
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While loop
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Do-while loop
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For vs. while
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Continue statement
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Break statement
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Goto statement
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C functions
This category details how to create and use functions for modular and reusable code.
C functions intro
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User-defined functions
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Argument passing
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Function prototypes
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Returning multiple values
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Main() function
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Implicit int return
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C callbacks
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Nested functions
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Variadic functions
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_Noreturn specifier
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__func__ identifier
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Math.h library
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C arrays & strings
This category discusses how to work with collections of data using arrays and character strings.
C arrays intro
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Array properties
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Multi-dimensional arrays
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Initializing multi-D arrays
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Passing arrays to functions
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Passing 2D arrays
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Invalid array types
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Pass array by value?
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C strings intro
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String arrays
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Char array quotes (single vs. double)
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C string library functions
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C pointers
This category explores one of C's most powerful features: pointers and direct memory manipulation.
C pointers intro
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Pointer arithmetic
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Pointer to pointer
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Function pointers
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Declaring function pointers
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Pointer to array
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Constant pointers (types)
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Pointers vs. arrays
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Special pointers (dangling, null)
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Near/far/huge pointers
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restrict keyword
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C custom data types
This category covers user-defined data types like structures, unions, and enumerations.
C structures (struct)
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Dot (.) operator
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C typedef
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Struct alignment/padding
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Flexible array members
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C unions
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Bit fields
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Struct vs. union
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Anonymous structs/unions
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Enumerations (enum)
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C storage classes
This category explains storage classes which determine the scope, lifetime, and linkage of variables.
C storage classes intro
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Extern keyword
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Static variables
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Initializing static vars
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Static functions
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Volatile qualifier
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Register keyword
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C memory management
This category covers how memory is managed in C, including dynamic memory allocation.
C program memory layout
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Dynamic allocation (malloc, calloc)
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Malloc vs. calloc
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Memory leaks & prevention
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Dynamic arrays
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Dynamic 2D arrays
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Growing dynamic arrays
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C preprocessor
This category explains the C preprocessor and its directives for macro expansion, conditional compilation, and file inclusion.
C preprocessor intro
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Preprocessor directives
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How preprocessor works
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C header files
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Stdio.h vs. stdlib.h
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Custom header files
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C macros & types
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Macro/preprocessor facts
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# and ## operators
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Printing var names (macros)
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Multiline macros
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Variadic macros
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GCC branch prediction macros
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Typedef vs. #define
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#define vs. const
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C file handling
This category describes how to perform file input and output operations in C.
File handling basics
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Fopen() function
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EOF, getc(), feof()
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Fgets() function
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Fseek() vs. rewind()
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Getchar()/fgetc()/getc() return
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File I/O for structs
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Print file contents
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Delete a file
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Merge two files
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Printf vs. sprintf vs. fprintf
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Getc vs. getchar vs. getch
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C miscellaneous topics
This category covers various other important topics in C programming.
Time.h header
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I/O system calls
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C signals
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Program error signals
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C socket programming
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_Generic keyword
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C multithreading
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