C Programming For Beginners - Learn C Language from Scratch

Learn how a C program compiles main.c into a platform-specific executable with MinGW gcc in Visual Studio Code, running on Windows, Mac, or Linux.

Learn how variables act as memory containers in a C program, using int, float, double, and char data types, and print their values with printf and format specifiers.

Explore how keywords are reserved words in C and how identifiers name variables and functions. Use identifiers with letters, digits, and underscores; never start with a digit and avoid keywords.

learn to take input and display output in C using printf and scanf, with format specifiers and the address of operator for integers and floats.

Learn how comments in C provide non-executable notes that explain code, using single-line and multi-line styles. Apply readability best practices and avoid overusing or nesting multi-line comments.

Master basic C concepts by printing student details, reading inputs, computing sums, swapping with a temporary variable, calculating circle area, and commenting code.

Explore how to perform calculations in C using operators and expressions, focusing on arithmetic operators plus, minus, times, divide, and modulus, including integer division behavior and how to print results.

Master relational and logical operators in C to compare values, produce true or false results, and combine conditions with and, or, and not to guide program flow.

Learn how C assignment operators work, such as +=, -=, *=, /=, and %=, through examples where a starts at 10 and becomes 15, then 2, illustrating compute-and-assign behavior.

Learn how increment and decrement operators in C language work, increasing or decreasing a variable by one, including pre and post forms in expressions like printf and loops.

Explore typecasting in C to control integer versus floating-point division, using implicit and explicit conversion to preserve decimal precision and understand how casting affects output.

Understand how operator precedence and associativity govern expression evaluation in C with examples showing why multiplication happens before addition and how parentheses override rules.

Solve a practice set on operators and expressions in c, including building an arithmetic calculator with two integers. Cover comparisons, eligibility checks, pre- and post-increment, and operator precedence basics.

Apply if else logic in C by evaluating conditions, executing code when true, and using else and else if ladders to handle alternatives, with voting eligibility and grading examples.

Discover nested if statements in C, where an outer if checks marks and an inner if checks attendance, printing outcomes like you passed the exam and maintained good attendance.

Explore switch statements in C to replace long if-else chains with clean case blocks. Use break to avoid fall-through, default for invalid input, and map values to names like days.

Explore the goto statement in C, why it is avoided as bad practice, and when it may be useful for exiting nested loops or performing cleanup.

Practice set 4 teaches C decision making with if else, nested if, and switch through even/odd, largest of two numbers, grade and leap year checks, a calculator, and range checks.

Master the while loop in C with practical examples that print hello five times, and understand loop conditions, i increments, and the difference between while, for, and do while loops.

Master the for loop in C, which combines initialization, condition, and update to run a block, with an example printing 1 through 5.

Learn how the do-while loop in C guarantees at least one execution, with the syntax do { ... } while (condition); and compare it to while and for loops.

Explore nested loops in C by placing one loop inside another to print patterns and handle multi-dimensional data. See the outer loop controls rows while the inner loop prints stars.

Learn how break and continue work in C to control loops and switch statements, including exit from loops and skipping iterations.

Master control flow and loops in C with practice on printing sequences, sums, factorials, and patterns. Use for, while, do-while, continue, break, and nested loops for tables and patterns.

Explore how functions in C create reusable blocks with a return type, name, parameters, and body, and how calling them simplifies tasks like averages.

Learn to declare and define functions in C, using prototypes before and after the main function, with examples like greet and sum to master return types and parameter passing.

Define and use functions with parameters and return values in C, returning an integer sum of two integers and demonstrating function declaration, definition, and calling with different inputs.

Explore call by value and call by reference in C, showing how values are copied versus passing addresses, and how pointers and operators affect memory.

Explore recursion by implementing a factorial function that calls itself until a base case, contrast with loops, and understand the recursive and base cases and how to avoid stack overflow.

Learn how arrays replace multiple variables by storing many values of the same type under one name, with zero-based indexing, access, and modification of elements in C.

Learn how to work with single dimensional arrays in C, including declaration, initialization, traversal with for loops, taking user input with scanf, and computing sums.

Learn how C passes arrays to functions by reference, using the address of the first element, and how contiguous memory enables element access and changes reflected outside the function.

Explore multi-dimensional arrays in C language, focusing on two-dimensional arrays like a matrix with three rows and two columns. Learn element access, looping, and memory layout.

Explore strings in C as arrays of characters and learn the null terminator. Print and read strings using printf, scanf, gets, and fgets.

Learn how strlen reports a string's length by counting characters before the null terminator, and use strcpy to copy a source string into a destination buffer of adequate size.

This lecture explains strcat, strcmp and strrev, showing how to concatenate, compare and reverse strings, with examples and notes on memory space and lexicographic results.

Traverse a string in C by visiting each character from the first to the last and printing them, using a for loop and noting the null terminator.

Explore how pointers store addresses, use ampersand and star operators, and dereference to access and modify values, pass addresses to functions, and enable dynamic memory allocation.

Explore pointers and pointer to pointers in C, showing how variables store addresses, dereference to access values, and print addresses and values to map memory.

Learn pointer arithmetic: incrementing integer pointers by four bytes, traversing arrays, dereferencing to access elements, and safely moving within allocated memory.

Learn how to pass pointers to functions in C to modify original data, swap integers using addresses, and work with pointer-based strings.

Master null, dangling, wild, and void pointers in C. Learn safe dereferencing, memory handling, and typecasting to work with different data types.

Explore dynamic memory allocation in C, understand static versus dynamic memory, and see how heap and stack manage memory at runtime using malloc, calloc, and realloc.

Explore dynamic memory allocation in C with malloc and calloc, learning how to allocate memory on the heap, handle allocation failures, and free memory safely.

Realloc resizes a memory block allocated with malloc or Kellogg, extending in place when possible or copying data to a new block. Free deallocates heap memory to prevent memory leaks.