C stack/heap
From wikinotes
- stack: memory storing local scope variables. stack variables get destroyed when out of scope.
- heap: your system memory (access with malloc/free)
main problems
- if retrieve block of memory from malloc, and have pointer on stack, pointer gets lost when out of scope.
- STACK OVERFLOW: storing too much data into the stack can cause program to crash
- SEGMENTATION FAULT: storing a pointer on the stack, then returning/passing it to function causes crash because the pointer is removed from the stack as it leaves scope.
