What are common iterator errors in C++?

What are common iterator errors in C++?

Common iterator errors in C++ include dereferencing invalid iterators, using iterators after the container has been modified, and out-of-bounds access.

Can you give me an example of dereferencing an invalid iterator?

Sure! If you have a vector and you erase an element, any iterators pointing to that element become invalid. Dereferencing them will lead to undefined behavior.

How can I avoid these iterator errors?

To avoid iterator errors, always check if the iterator is valid before dereferencing, and be cautious when modifying containers.

What happens if I try to use an iterator after the container is modified?

Using an iterator after modifying the container can lead to crashes or unexpected behavior, as the iterator may no longer point to a valid element.