fix(problem-02.py): completed problem-02

lab-02/problem-02.py

@@ -1,3 +1,10 @@
 # Problem 2: Write a Python program that prompts the user to input an integer and raises a ValueError exception if the
 # input is not a valid integer.
 
+# Define the function int_check to check if user input is an integer
+def int_check(x):
+    # Cast user input as integer, throws ValueError if not
+    x = int(x)
+
+# Call the function, prompting the user to input an integer
+int_check(x = input('Enter an integer: '))