What's the point of pointers? #1 Simulate call by reference (the classic swap example) RE-RECORDED C

What's the point of pointers? #2 Dynamically growing arrays (malloc, free, realloc) RE-RECORDED C

What's the point of pointers? #3 Higher-order functions with function pointer parameters/arguments C

C pointers by example: Advent of Code 2021 Day 1 Sonar Sweep