print a binary tree level by level

[kdp]

Could someone help me out in printing a binary tree level by level, knowing its depth??

[nspils]

You would perform a breadth first search -

go to root, put it into a queue
whle the queue is not empty,
pop the root node off the queue, print, visit each of its children, pushing them onto the queue
pop the first child off the queue, print, visit each of its chidren, pushing them onto the queue
pop the next child,
etc.