Implementing a string copy function in C

Question

At a recent job interview, I was asked to implement my own string copy function. I managed to write code that I believe works to an extent. However, when I returned home to

Answer 1

As the other answers have said, you're overwriting the buffer, so for the sake of your test change it to:

char buffer[ 12 ];

For the job interview they were perhaps hoping for:

char *mycpy( char *s, char *t )
{
    while ( *s++ = *t++ )
    {
        ;
    }
    return s;
}