Stack vs Heap: Be Sure You Know Where Your Variables Live

The article explains a common programming bug involving dangling pointers in C, where returning a pointer to a local variable leads to undefined behavior. Understanding the difference between stack and heap allocation is crucial: variables with lifetimes limited to a single function call reside on the stack for efficiency, while those needing longer lifespans require heap allocation due to more complex management.

Developers should be cautious about returning pointers to local stack variables as it can lead to undefined behavior or crashes.

Read the full article at DEV Community

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