How can I convert hex number to integers and strings in Objective C?

Question

Given the example of an array like this:

idx = [ 0xe, 0x3,  0x6, 0x8, 0x2 ]

I want to get an integer and string representation of each of the specified items in Objective C. I have mocked up a ruby example which works perfectly:

0xe gives 14 when i run 0xe.to_i and "e" when i run to_i(base=16)
0x3 gives 3 when i run 0x3.to_i and gives 3 when i run to_i(base=16)

How can I achieve this in Objective C?

Answer 1

To get the decimal and hexadecimal equivalents, you would do:

int number = 0xe; // or 0x3, 0x6, 0x8, 0x2

NSString * decimalString = [NSString stringWithFormat:@"%d", number];
NSString * hexString = [NSString stringWithFormat:@"%x", number];

Answer 2

Once you have an NSString you can just use the methods in that class, like intValue or longValue or floatValue