grading script small fix

README.md

@@ -138,17 +138,14 @@ Make sure that you're capable of using the following development tools:
 - We'll announce **all** assignments before the semester begins.
 - Submit your solution to <https://gg.kaist.ac.kr/course/17>.
 - Read the documentation at <https://cp.kaist.ac.kr/cs220/cs220/>.
-- We provide grading scripts for each assignment. Before submission, you can check your grade with your machine.
-  - Grading scripts are located at `scripts/` directory.
+- You can check your grade of each assignment by running the grading script.
   - You can run the grading script with the following command:
   ```bash
-  $ `scripts/grade.sh <assignment number>`
+  $ ./scripts/grade.sh <assignment_number>
   ```
-    - For example,
-    - If you want to grade `assignment9`, run the following command:
+    - E.g. To grade `assignment09`, run the following command:
       ```bash
-      $ cd scripts
-      $ ./grade.sh 9
+      $ ./scripts/grade.sh 9
       ```
 - You're **allowed** to use ChatGPT or other LLMs. Instead, you'll solve more problems than previous semesters.
 

scripts/grade.sh

@@ -19,9 +19,9 @@ echo "Running with $RUNNER..."
 if [ $# != 1 ]
   then
     echo "==============================="
-    echo "Invalid number. $# arguments given."
-    echo "Usage: ./grade.sh <test_number>"
-    echo "Example: ./grade.sh 1"
+    echo "Invalid argument."
+    echo "Usage: './grade.sh <assignment_number>'"
+    echo "Example: './grade.sh 1' to grade assignment01"
     exit 1
 fi
 TEST_NAME=$(printf "TEST%02d" $1)
@@ -103,7 +103,8 @@ case $TEST_NAME in
         )
         ;;
     *)
-        echo_err "Invalid test name: $TEST_NAME"
+        echo_err "Invalid assignment number: $1"
+	echo_err "Assignment number should be within 1 to 12."
         exit 1
         ;;
 esac