Padding string to left

Question

How can one pad a string to left in objective c. E.g if I have an integer value of 6 I want it to be displayed as 06.

I use stringByPaddingToLength: but

Answer 1

This one pads left with 10 zeroes.

NSString *padded = [NSString stringWithFormat:@"Padded left with zeros: %010d", 65];