Update README.md

README.md

@@ -2,7 +2,7 @@
 
 Port Scanner written in C++20
 
-```
+```bash
 Allowed options:
   --help                  display help message
   --host arg (=127.0.0.1) set host
@@ -11,6 +11,29 @@ Allowed options:
   --show arg (=all)       display only 'open', 'closed', or 'all' ports
 ```
 
+## Example
+
+```bash
+./PortScanner --host uoc.gr --show open
+Port 22 is open.
+Port 53 is open.
+Port 111 is open.
+Port 389 is open.
+Port 409 is open.
+Port 656 is open.
+Port 636 is open.
+Port 2000 is open.
+Port 3998 is open.
+Port 3999 is open.
+Port 5060 is open.
+Port 21162 is open.
+Port 21163 is open.
+Port 41314 is open.
+Port 43917 is open.
+Port 47603 is open.
+Port 52116 is open.
+```
+
 ## How to Build using CMake
 
 ```bash