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POWhy do my functions not change the values of my outside variables?
 

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  1. POWhy do my functions not change the values of my outside variables?
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    <p>I am using Xcode version 4.6. In an application for the iPhone and iPad I am making, I made a function called dealCard. Here it is:</p> <pre><code>- (void)dealCard : (UIImageView *)cardImage : (int)card : (int)suit : (BOOL)aceBool : (int) cardValue : (int)total { suit = arc4random() % 4; card = arc4random() % 13; if (suit == 0) { //set images if (suit == 1) { //set images } if (suit == 2) { //set images } if (suit == 3) { //set images } if (card &lt; 10 &amp;&amp; card != 0) { NSLog(@"Setting cardValue"); cardValue = card+1; } else if (card != 0) { NSLog(@"Setting cardValue"); cardValue = 10; } else { NSLog(@"Setting cardValue"); aceBool = YES; if (total + 11 &lt;= 21) { cardValue = 11; } else { cardValue = 1; } } total = total + cardValue; NSLog(@"Total = %d cardValue = %d",total,cardValue); NSLog(@"playerTotal = %d playerCard3Value = %d",playerTotal,playerCard3Value); } </code></pre> <p>Further down the page I put:</p> <pre><code>[self dealCard: playerCard3Image : playerCard3 : playerSuit3 : playerCard3ace : playerCard3Value : playerTotal]; </code></pre> <p>My problem is in the cardValue. The output says "Setting cardValue", and then the instance variable numbers are both right, but the other two are wrong. The playerTotal reads whatever the total was before this card was dealt, and the playerCard3Value reads 0. To give you some context, this function is called not when the first or second card is dealt, but when the third and on are. The first two are not handled in a function. Does anyone know why this is happening?</p>
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    1. USJohn Farkerson
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      1. POWhy do my functions not change the values of my outside variables?
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      1. VTDownMod
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      1. VTUpMod
    1. COWould this be due to the scope of the variables?
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      1. POWhy do my functions not change the values of my outside variables?
      1. USPsyKzz
    2. CO@Matt PsyK - How can I make them global? I just declare them in the .h file like : `int playerCard3Value;`
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      1. POWhy do my functions not change the values of my outside variables?
      1. USJohn Farkerson
    3. COUnfortunately i dont know obj-c or xcode enough to comment.
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      1. POWhy do my functions not change the values of my outside variables?
      1. USPsyKzz
 

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