BiteSizedChunks.comLearn one small thing at a time.

Course contentsShow

447Memory as a linear sequence of bytes
448How variables are stored in RAM
449The Address-of operator `&`
450Printing addresses with `%p`
451Hexadecimal notation for memory
452The size of a pointer variable
453Determining variable alignment in memory
454Introduction to the stack frame
455Declaring pointer variables with `*`
456The difference between `int *p` and `*p`
457The Dereference operator `*`
458Assigning values via pointers
459Initializing pointers to NULL
460Multiple pointers to the same address
461Implicit vs explicit pointer types
462Checking for NULL before dereferencing
463Incrementing pointers with `++`
464Adding integers to pointers
465How data types affect step size
466Subtracting two pointers
467Pointer comparison with `==` and `<`
468Scaling factor in pointer math
469Illegal pointer arithmetic operations
470Navigating memory blocks manually
471Array names as constant pointers
472Accessing arrays with pointer notation
473The equivalence of `a[i]` and `*(a + i)`
474Passing arrays to functions as pointers
475Array decay explained
476Pointer to the start of an array
477Iterating arrays using pointer increments
478Bounds checking and pointer safety
479String literals as `char` pointers
480Mutable vs immutable string memory
481Iterating strings until `\0` with pointers
482Pointer-based `strcpy` implementation
483Array of strings vs 2D char array
484Memory layout of string pointers
485Using `const char *` for safety
486Pass-by-value limitations
487Passing addresses to functions
488Modifying caller variables
489Returning multiple values via pointers
490Swapping two numbers using pointers
491Efficiency of passing large structs by pointer
492Side effects in pointer-based functions
493Pointer to a constant (`const int *p`)
494Constant pointer to a value (`int * const p`)
495Constant pointer to a constant
496When to use `const` with pointers
497Read-only function parameters
498The 'Clockwise/Spiral' rule for declarations
499Casting away `const` volatility
500Concept of double indirection
501Declaring `int **pp`
502Visualizing pointer chains
503Modifying a pointer inside a function
504Dynamic 2D array structures
505Accessing data through double dereference
506Command line arguments `char **argv`
507The `void *` generic type
508Why you can't dereference `void *`
509Casting `void *` to specific types
510Implicit conversion to `void *`
511Generic functions in C
512The `memcpy` function signature
513Implementing a generic swap function
514Syntax of function pointers
515Taking the address of a function
516Calling a function via a pointer
517Arrays of function pointers
518Passing functions as arguments
519The `qsort` callback mechanism
520Defining `typedef` for function pointers
521Uninitialized 'wild' pointers
522Dangling pointers after `free`
523Memory leaks and lost pointers
524Buffer overflows via pointers
525Dereferencing the NULL pointer
526Misaligned pointer access
527Pointer type-punning dangers
528Tools for pointer debugging (Valgrind)

447Memory as a linear sequence of bytes
448How variables are stored in RAM
449The Address-of operator `&`
450Printing addresses with `%p`
451Hexadecimal notation for memory
452The size of a pointer variable
453Determining variable alignment in memory
454Introduction to the stack frame
455Declaring pointer variables with `*`
456The difference between `int *p` and `*p`
457The Dereference operator `*`
458Assigning values via pointers
459Initializing pointers to NULL
460Multiple pointers to the same address
461Implicit vs explicit pointer types
462Checking for NULL before dereferencing
463Incrementing pointers with `++`
464Adding integers to pointers
465How data types affect step size
466Subtracting two pointers
467Pointer comparison with `==` and `<`
468Scaling factor in pointer math
469Illegal pointer arithmetic operations
470Navigating memory blocks manually
471Array names as constant pointers
472Accessing arrays with pointer notation
473The equivalence of `a[i]` and `*(a + i)`
474Passing arrays to functions as pointers
475Array decay explained
476Pointer to the start of an array
477Iterating arrays using pointer increments
478Bounds checking and pointer safety
479String literals as `char` pointers
480Mutable vs immutable string memory
481Iterating strings until `\0` with pointers
482Pointer-based `strcpy` implementation
483Array of strings vs 2D char array
484Memory layout of string pointers
485Using `const char *` for safety
486Pass-by-value limitations
487Passing addresses to functions
488Modifying caller variables
489Returning multiple values via pointers
490Swapping two numbers using pointers
491Efficiency of passing large structs by pointer
492Side effects in pointer-based functions
493Pointer to a constant (`const int *p`)
494Constant pointer to a value (`int * const p`)
495Constant pointer to a constant
496When to use `const` with pointers
497Read-only function parameters
498The 'Clockwise/Spiral' rule for declarations
499Casting away `const` volatility
500Concept of double indirection
501Declaring `int **pp`
502Visualizing pointer chains
503Modifying a pointer inside a function
504Dynamic 2D array structures
505Accessing data through double dereference
506Command line arguments `char **argv`
507The `void *` generic type
508Why you can't dereference `void *`
509Casting `void *` to specific types
510Implicit conversion to `void *`
511Generic functions in C
512The `memcpy` function signature
513Implementing a generic swap function
514Syntax of function pointers
515Taking the address of a function
516Calling a function via a pointer
517Arrays of function pointers
518Passing functions as arguments
519The `qsort` callback mechanism
520Defining `typedef` for function pointers
521Uninitialized 'wild' pointers
522Dangling pointers after `free`
523Memory leaks and lost pointers
524Buffer overflows via pointers
525Dereferencing the NULL pointer
526Misaligned pointer access
527Pointer type-punning dangers
528Tools for pointer debugging (Valgrind)

← C

Lesson 500 of 1,219·7. PointersPro lesson

Concept of double indirection

This lesson is for subscribers

You've completed the free preview. Subscribe to unlock every lesson in every course.

See pricing Back to course