Understanding Pointers
A pointer in C is a variable that stores the memory address of another variable, allowing indirect access and modification of its value.
Pointers are a fundamental feature of C that allow you to work directly with memory addresses. Each variable in C is stored in memory, and its address represents the location where its value is kept.
Variables created inside functions are stored on the stack, which is automatically managed and cleared when the function ends. Memory allocated dynamically with functions like malloc() or calloc() comes from the heap, which you must manage manually using free().
Pointers let you access and manipulate both stack and heap memory, making them essential for dynamic data structures, efficient memory use, and low-level programming.
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Can you explain the difference between stack and heap memory in more detail?
How do I declare and use a pointer in C?
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A pointer in C is a variable that stores the memory address of another variable, allowing indirect access and modification of its value.
Pointers are a fundamental feature of C that allow you to work directly with memory addresses. Each variable in C is stored in memory, and its address represents the location where its value is kept.
Variables created inside functions are stored on the stack, which is automatically managed and cleared when the function ends. Memory allocated dynamically with functions like malloc() or calloc() comes from the heap, which you must manage manually using free().
Pointers let you access and manipulate both stack and heap memory, making them essential for dynamic data structures, efficient memory use, and low-level programming.
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