Question

Im wondering why this code won’t work. It’s for a calculator 🙂
I need the symbol (banana) to be recognised by the calculator and to use either +,- according to what the user inputs.

NSString *list = [Sum_TextField text]; 
NSArray *listItemsArray = [list componentsSeparatedByString:@" "];
int batman = [[listItemsArray objectAtIndex: 0] intValue]; 
NSString *banana = [listItemsArray objectAtIndex: 1];
int joker = [[listItemsArray objectAtIndex: 2] intValue];
{

    Calculator* calc = [[Calculator alloc] init];
    [calc setNum1:batman];
    [calc setNum2:joker];
    if ((banana = @"-"))
    {
        [calc minus];
    }
    else if ((banana = @"+"))
    {
        [calc add];
    } 

    [Answer_TextField setText:[NSString stringWithFormat:@"%d", [calc answer]]];  
}
}

Answer 1

Here’s how you want to do this:

 if ([banana isEqualToString:@"-"])
 {
     [calc minus];
 }
 else if ([banana isEqualToString:@"+"])
 {
     [calc add];
 }