C if vs switch

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Why can't variables be declared in a switch statement? 23 answers

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You need a separate scope in the case if you want to declare any variables there:

switch ((int)typeOfHall) {
    case 1:
    {   /* Introduce a scope ... */
        NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"Game"]; 
        NSPredicate *p = [NSPredicate predicateWithFormat:@"player_id == %@ ",[[NSUserDefaults standardUserDefaults] valueForKey:@"LoggedUserId"]];
        request.predicate = p;
        break;
    }   /* ... that ends here. */
    default:
        break;

}

Side note: if LocalHall is an enum value, your code is more readable without the cast:

switch (typeOfHall) {
    case LocalHall:
    // ...

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