Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Objective-C Basics (Retired) Pointers and Memory Array Size and Length

cannot get this one.

cannot get this question

float real_numbers [5];
printf("Array real_numbers is %lu bytes.", sizeof(Byte));

1 Answer

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Armen Gharibi !

Challenge Task 2 of 3 asks you to use the printf function to print the size in bytes of the variable real_numbers. Your output should look like the following: Array real_numbers is x bytes.

float real_numbers [5];
printf("Array real_numbers is %ld bytes.\n", sizeof(real_numbers));

The result of sizeof(real_numbers) is an NSInteger, hence the %ld String Format Specifier