MemC Blog
In-depth tutorials on C memory: stack vs heap, malloc/free, pointers, memory leaks, use-after-free, and double-free. Learn with the MemC visualizer.
- Memory Managementdynamic arrays in C
Dynamic Arrays in C: How to Build Resizable Arrays with malloc and realloc
Learn how to implement dynamic, resizable arrays in C. Master malloc, realloc, and free to create vectors that grow with your data. Avoid common memory pitfalls.
- Memory Managementmemory fragmentation C
Memory Fragmentation in C: Types, Causes, and Solutions Explained
Understand internal and external memory fragmentation in C. Learn how fragmentation impacts performance and how to solve it using pools and custom allocators.
- Memory Managementmemory pools in C
Memory Pools in C: Optimizing Performance with Fixed-Size Allocators
Master memory pools in C to eliminate heap fragmentation and boost performance. Learn how to implement custom fixed-size allocators for embedded and high-speed systems.
- Memory Managementmemset memcpy memmove C
C memset, memcpy, and memmove: The Ultimate Guide to Memory Manipulation
Master C memory functions like memset, memcpy, and memmove. Learn about syntax, performance, overlapping memory, and buffer safety with practical examples.
- Memory Managementmmap memory mapping C
mmap in C: High-Performance Memory Mapping and Shared Memory Guide
Master the mmap system call in C. Learn how to map files to memory for high-performance I/O, implement shared memory, and use anonymous mappings.
- Memory Managementbuffer overflow
Buffer Overflow in C - Complete Guide to Causes and Prevention
Learn what a buffer overflow is in C, how it causes security vulnerabilities and segmentation faults, and how to prevent it with safe coding practices.
- Memory Managementmemory alignment
Memory Alignment and Padding in C - In-depth Guide
Understand data structure alignment, memory padding, pragmas, and attribute packed to optimize memory usage and performance in C.
- Memory Managementrealloc
The realloc() Function in C - Dynamic Memory Guide
Learn how to use the realloc() function in C to resize dynamic memory blocks. Explore syntax, practical examples, memory leaks, and best practices.
- Memory Managementvalgrind
How to Use Valgrind in C - Complete Memory Debugging Guide
Master Valgrind in C to detect and fix memory leaks, segmentation faults, use-after-free errors, and uninitialized pointers with real-world examples.
- Memory Managementdangling pointer
Dangling Pointers in C - A Comprehensive Guide to Prevention
Learn what a dangling pointer is in C, how it causes use-after-free bugs and segmentation faults, and best practices to safely nullify and manage freed memory.
- Memory Managementdouble free
Double Free in C - Complete Guide to Detection and Prevention
Learn what a double free error is in C, why freeing the same pointer twice causes heap corruption, how to detect it, and best practices to prevent it.
- Memory Managementpointer arithmetic
Pointer Arithmetic in C - Complete Guide to Memory Navigation
Learn how pointer arithmetic works in C, understand memory scaling based on data types, and discover how to navigate arrays and memory buffers efficiently.
- Memory Managementsegmentation fault
Segmentation Fault in C - Complete Guide to Causes and Fixes
Learn what a segmentation fault (segfault) is in C, the most common causes like null pointer dereference and buffer overflows, and how to debug them effectively.
- Memory Managementmalloc vs calloc
malloc vs calloc in C - The Complete Memory Allocation Guide
Learn the differences between malloc and calloc in C, including initialization, performance, and best practices. Understand which one to use for your next C program.
- Memory Managementpointers in C
Pointers in C - The Ultimate Memory Management Guide
Master pointers in C: learn about addresses, dereferencing, pointer arithmetic, and void pointers. Understand how to manage memory safely and effectively.
- Memory Managementstack vs heap
Stack vs Heap in C - The Complete Memory Management Guide
Understand the key differences between stack and heap memory in C, including allocation, performance, and use cases. Learn why stack is fast and heap is flexible.
- Memory Managementuse-after-free
Use-After-Free in C - Detection, Prevention, and Security Risks
Learn what use-after-free (UAF) is in C, why it's a dangerous memory corruption vulnerability, and how to detect it with tools like Valgrind, ASan, and MemC.
- Memory Managementmemory leak
Memory Leaks in C - Complete Guide to Detection and Prevention
Learn what memory leaks are in C, why they occur, how to detect them with Valgrind and MemC, and best practices to prevent leaks. Every malloc needs a matching free.