Why the difference in UIAlertView? - objective-c

Question

I have the following code, which works:
// Load new game screen
-(IBAction)newGame_button:(id)sender {
myAlert = [[UIAlertView alloc]
initWithTitle:#"Varning"
message:#"Om du går vidare kommer pågående spel stoppas och nollställas!"
delegate:self
cancelButtonTitle:#"Tillbaka"
otherButtonTitles:#"Fortsätt", nil];
myAlert.tag=kTagNewGame;
[myAlert show];
[myAlert release];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
switch(myAlert.tag ) {
case kTagContinueGame:
NSLog(#"kTagContinueGame");
NSMutableArray *continueGameArray = [[NSMutableArray alloc] initWithCapacity:0];
AccessCurrentGameData *getCurrentGameInfo = [AccessCurrentGameData new];
continueGameArray = [getCurrentGameInfo continueTheCurrentGame];
[getCurrentGameInfo release];
[continueGameArray retain];
[continueGameArray release];
QandA_ViewController * temp = [[QandA_ViewController alloc] init];
[self setQanda_ViewController:temp];
[temp release];
[[self navigationController] pushViewController:qanda_ViewController animated:YES];
break;
case kTagNewGame:
NSLog(#"kTagNewGame");
AccessCurrentGameData *zeroCurrentGameFileFunction = [AccessCurrentGameData new];
[zeroCurrentGameFileFunction firstCreationOrRestoreOfGameDataFile];
[zeroCurrentGameFileFunction release];
NewGameViewController * temp2 = [[NewGameViewController alloc] init];
[self setNewGameViewController:temp2];
[temp2 release];
[[self navigationController] pushViewController:newGameViewController animated:YES];
break;
default:
break;
}
}
However, when I remove the NSLog's I get the following error:
Expected expression before 'NSMutableArray'
I do not understand why this is happening. I can probably leave the NSLog's but why?

Answer 1

The problem is that variable declaration cannot directly follow case label. To solve that I usually put the whole case block in {}:
...
case kTagNewGame:
{
AccessCurrentGameData *zeroCurrentGameFileFunction = [AccessCurrentGameData new];
[zeroCurrentGameFileFunction firstCreationOrRestoreOfGameDataFile];
[zeroCurrentGameFileFunction release];
NewGameViewController * temp2 = [[NewGameViewController alloc] init];
[self setNewGameViewController:temp2];
[temp2 release];
[[self navigationController] pushViewController:newGameViewController animated:YES];
break;
}
...