cannot jump from switch statement to this case label c 2b 2b

1put everything in the case x: under {} brackets
2metti tutto quello nel case x: sotto le parentesi {}

1switch (choice)
2{
3    case 1: get_two_numbers(x, y);
4            //* vv here vv *
5            int sum = add(x, y);
6            //* ^^ here ^^ */
7            cout << x << " + " << y << " = " <<  sum << endl;
8            break;
9    case 2: get_two_numbers(x, y);
10            //* vv here vv */
11            int diff = subtract(x, y);
12            //* ^^ here ^^ */
13            cout << x << " - " << y << " = " <<  diff << endl;
14            break;
15    default:;
16}

1switch(foo) {
2  case 1:
3    int i = 42; // i exists all the way to the end of the switch
4    dostuff(i);
5    break;
6  case 2:
7    dostuff(i*2); // i is *also* in scope here, but is not initialized!
8}