docs: Add more examples and what to do when there are no arguments

2 years ago · dfb2833658
1 changed files with 4 additions and 2 deletions
--- a/subjects/canyoucount/README.md
+++ b/subjects/canyoucount/README.md
@ -2,11 +2,13 @@

 ### Instructions

-Your program will receive some arguments. Count how many characters they have in total and print them.
+Your program will receive some arguments. Count how many characters they have in total and print them. If the number of arguments is invalid it should print 0.

 ### Usage

 ```console
 $ go run . "hello" "how are you?" | cat -e
-17 $
+17$
+$ go run . | cat -e
+0$
 ```