Iterating through an array to print out each value

Question

I have the code written already - but I need some clarification that I couldn't find in some other answers on this site. I couldn't find a solid example to help me.

Is this correctly considered 'iterating' through my array? I feel like this really hard coded. I'm learning still. Thanks

    NSMutableArray *stocks = [NSMutableArray array];


    BNRStockHolding *A = [[BNRStockHolding alloc]init];
    BNRStockHolding *B = [[BNRStockHolding alloc]init];
    BNRStockHolding *C = [[BNRStockHolding alloc]init];


    [stocks insertObject:A atIndex:0];
    [stocks insertObject:B atIndex:1];
    [stocks insertObject:C atIndex:2];

    for (int i = 0; i < 1; i++)
    {

    {
    [A setNumberOfShares:40];
    [B setNumberOfShares:90];
    [C setNumberOfShares:210];

    [A setPurchaseSharePrice:2.30];
    [B setPurchaseSharePrice:12.19];
    [C setPurchaseSharePrice:45.10];

    [A setCurrentSharePrice:4.50];
    [B setCurrentSharePrice:10.56];
    [C setCurrentSharePrice:49.51];

    float costA = [A costInDollars];
    float costB = [B costInDollars];
    float costC = [C costInDollars];
    NSLog(@"This stock costs %.2f", costA);
    NSLog(@"This stock costs %.2f", costB);
    NSLog(@"This stock costs %.2f", costC);

    NSLog(@"\n");

    float valueA = [A valueInDollars];
    float valueB = [B valueInDollars];
    float valueC = [C valueInDollars];
    NSLog(@"The current value of this stock is %.2f", valueA);
    NSLog(@"The current value of this stock is %.2f", valueB);
    NSLog(@"The current value of this stock is %.2f", valueC);
    }
    }

score 1 · Accepted Answer · edited May 23 '17 at 11:49

Your current for loop isn't actually looping through anything. If you want to iterate through the array to print out each value, here's what you do:

for(BNRStockHolding *stockHolding in stocks) {

    NSLog(@"This stock costs: %.2f", [stockHolding costInDollars]);
    NSLog(@"The current value of this stock is %.2f", [stockHolding valueInDollars]);
}

This really is a basic concept. I would read through this answer regarding for loop fundamentals (and maybe review some other fundamentals) before attempting to write full blown apps.

Iterating through an array to print out each value

1 Answers1