int num1, num2,num3,num4, i=0;
NSMutableArray *charArray = [[NSMutableArray alloc] init];
while(num1 != 0 && num2 != 0) {
num3 = num1 & 1;
num4 = num2 & 1;
if(num3 != num4) {
if(num3 == 0) {
charArray[i++]= '0';
charArray[i++]= '1';
} else {
charArray[i++]='1';
charArray[i++]='0';
}
}
num1 = num1 > 1;
num2 = num2 > 1;
}
}
I am kinda new to objective-c, can someone tell me whats wrong with this?
You can't use the regular array-like subscripts with NSArrays (and NSMutableArrays). To add an item, you need to call the addObject method.. i.e. [charArray addObject:obj].
The other caveat is you can't add a bare char to an NSArray, it needs to be Objective-C type. You can use the NSNumber class to wrap it. So your code would then be:
[charArray addObject:[NSNumber numberWithChar:'0']];
[charArray addObject:[NSNumber numberWithChar:'1']];
But you can still use a regular C array and leave your code unmodified, which is probably a better solution in your case. i.e.
char charArray[MAX_SIZE];
addObject appends a value to the end automatically.You can't access an NSMutableArray using the [] syntax of C.
You need to use the -[NSMutableArray addObject:] or -[NSMutableArray insertObject:atIndex:] methods.
