Peter Cerba questions

• Arithmetic assignment operator - left side evaluated only once
• quicksort special case - seems to be a faulty algorithm from K&R
• recursive printf of binary tree elements
• Unsure about correctness of a sentence from K&R - pointer arithmetic | Freeing procedure
• pop and peek doing same in that case?
• does exit() free allocated memory on both _SUCCESS and _FAILURE

Peter Cerba answers