You swapped the child and parent in the printf statements here https://peteris.rocks/blog/htop/#z-defunct-zombie-process-terminated-but-not-reaped-by-its-parent

You swapped the child and parent in the printf statements here https://peteris.rocks/blog/htop/#z-defunct-zombie-process-terminated-but-not-reaped-by-its-parent https://peteris.rocks/blog/htop/#z-defunct-zombie-process-te.... printf("The parent process is exiting now\n"); This should read child is exiting. printf("The child process is sleeping now\n"); This should read parent is sleeping. Overall, I really enjoyed the article.