Question

so I need to divide on variable by a number.
How can I do this?
I know about the C functions of DIV and MOD, but do not know how to use them in objective-C/cocoa-touch.
Heres an example of my code.

// hide the previous view
scrollView.hidden = YES;

//add the new view
scrollViewTwo.hidden = NO;

NSUInteger across;
int i;
NSUInteger *arrayCount;
// I need to take arrayCount divided by three and get the remainder

When I try to use / or % I get the error
“Invalid operands to binary expression (‘NSUInteger and int)
Thanks for any help

Answer 1

Firstly, should arrayCount really be a pointer?

Anyway, if arrayCount should be a pointer, you just need to dereference it…

NSInteger arrayCountValue = *arrayCount;

… and use the operators / (for division) and % (for getting the module):

NSInteger quotient = arrayCountValue / 3;
NSInteger rest = arrayCountValue % 3;

You can do it without the auxiliary variable too:

NSInteger quotient = *arrayCount / 3;
NSInteger rest = *arrayCount % 3;

And just remove the dereference operator * if arrayCount is not a pointer:

NSInteger quotient = arrayCount / 3;
NSInteger rest = arrayCount % 3;