strcat implementation

Question

I tried to implement the strcat by myself, and I found the strcat implementation from Wiki like this......but when I use it, there is segmentation fault.

What\'s wro

Answer 1

dest needs to have enough memory to accommodate the concatenation in this implementation. In this implementation, it would have to be allocated by the caller. You should also be sure both dest and src are null terminated. If dest does not have enough memory, this will overwrite memory that could be used by something else.