Added newline to cerr stream

input_parsing.cpp

@@ -41,7 +41,7 @@ ProgramOptions get_params(int argc, char *argv[])
 			break;
 
 			default:
-			std::cerr << "Incorrect character code returned: %d" << option;
+			std::cerr << "Incorrect character code returned: %d\n" << option;
 		}
 	}