print_star(5) :
Fatal error: Uncaught Error: Call to undefined function stars() in /users/2018/i1858005/public_html/2019/webprog/ch08/exam08-04.php:20 Stack trace: #0 {main} thrown in /users/2018/i1858005/public_html/2019/webprog/ch08/exam08-04.php on line 20