case 2 entry

src/main/c/Calculator/calculator.c

@@ -21,4 +21,9 @@ switch (choice) {
                 result = add(num1, num2);
                 printf("Result: %d\n", result);
                 break;
-             
+              case 2:
+                printf("Enter two numbers: ");
+                scanf("%d %d", &num1, &num2);
+                result = subtract(num1, num2);
+                printf("Result: %d\n", result);
+                break;