case 5 entry

src/main/c/Calculator/calculator.c

@@ -42,4 +42,10 @@ switch (choice) {
                     result = divide(num1, num2);
                     printf("Result: %d\n", result);
                 }
-                break;
+                break;
+                    case 5:
+                printf("Exiting...\n");
+                break;
+            default:
+                printf("Invalid choice\n");
+        }