[C/C++] pthread parallel execution

Just started learning to use POSIX threads, but I find that every time I create a thread and/or join it, the calling thread halts until the called thread completes its iteration. How do I execute them parallel to one another?

Thanks.

I figured out the problem. It was something that was being executed after thread completion based on status return. Sorry for bothering you all, and thanks for your help and suggestions!