@ -25,7 +25,7 @@ abcdefghijklmnopqrstuvwxyz
Normal cases :
```
```console
$ go run . -c 4 file1.txt
xyz
$ go run . -c 4 file1.txt file2.txt
@ -39,7 +39,7 @@ $
Error cases :
$ go run . -c 4 file1.txt nonexisting1.txt file2.txt nonexisting2.txt
==> file1.txt <==