Thread: Help! Losing the top of my binary search tree...

If you want to stop the loop when strtok is set to null, that has to be the last statement in the loop:
strtok fileword
--> loop the loop while not null
| call asearch
| do the if-check
| strtok fileword
+-- loop the loop

Maybe that will help, if I understand the question.

Originally Posted by tabstop

If you want to stop the loop when strtok is set to null, that has to be the last statement in the loop:
strtok fileword
--> loop the loop while not null
| call asearch
| do the if-check
| strtok fileword
+-- loop the loop

Maybe that will help, if I understand the question.

What I'm trying to do is get strtok to work its magic on the fileline variable until there are no more words in fileline for it to work its magic on. The fileline variable contains the first line out of the file and goes through the loop with strtok. When done it gets the next line and does the same thing until EOF.
The problem is I don't know how to set the whileloop to terminate when strtok gets done with all the words in the fileline variable.

Originally Posted by Bizmark

What I'm trying to do is get strtok to work its magic on the fileline variable until there are no more words in fileline for it to work its magic on. The fileline variable contains the first line out of the file and goes through the loop with strtok. When done it gets the next line and does the same thing until EOF.
The problem is I don't know how to set the whileloop to terminate when strtok gets done with all the words in the fileline variable.

Yes -- that's what you and I posted. strtok returns NULL when there is nothing left in the input string to parse.