Interesting bug! You forgot function name. Notice inside while-loop body following expression:
tokens = (NULL, ",'");
^
'strtok' missing
should be:
tokens = strtok(NULL, ",'");
Interesting thing is that this is not a compilation error, in fact:
tokens = (NULL, ",'");
is a valid expression which is equals to:
tokens = ",'";
(Note: NULL has no side effects)
Read: Comma Operator: ,
The comma operator , has left-to-right associativity. Two expressions
separated by a comma are evaluated left to right. The left operand is
always evaluated, and all side effects are completed before the right
operand is evaluated.
Due to parenthesis ( ) at rhs of =, after evaluating , operator right hand operand "," is assigned to token. And because token never assigned NULL so while(tokens != NULL) never breaks, and this is the reason that you are getting "," infinitely!
