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In programming, memory allocation is a crucial aspect that determines how efficiently a program runs. Two primary types of memory allocation are stack memory and heap memory. Understanding the differences between these two can help in writing optimized and effective code.
Stack Memory
Stack memory is a region of memory that stores temporary variables created by each function. It follows a Last-In-First-Out (LIFO) order, meaning the most recently added data is removed first. The allocation and deallocation of memory in the stack are managed automatically by the compiler.
Key characteristics of stack memory include:
Automatic Allocation: Memory is allocated and deallocated automatically when functions are called and return.
Fixed Size: The size of stack memory is fixed and determined at the start of the program.
Fast Access: Accessing stack memory is faster due to its contiguous memory allocation.
Thread Safety: Each thread has its own stack, making it thread-safe.
Limited Scope: Variables in stack memory are only accessible within the function they are declared in.
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