Login to manage your account

Your email Please enter a valid email address.

Password Forgot Password?

Please enter a valid password.

OR

Don't have an account yet? Sign up

What happens to iterators when a std::vector reallocates during push_back?

A They remain valid
B All iterators, pointers and references into the vector are invalidated
C Only end() is invalidated
D They are automatically updated

Answer

All iterators, pointers and references into the vector are invalidated

Iterator invalidation is one of the most common sources of undefined behaviour. Reserving capacity in advance avoids reallocation.

Login to manage your account

Your email id Please enter a valid email address.

Password Forgot Password?

Please enter a valid password.

OR

Don't have an account yet? Sign up as

Jobseeker

Employer