Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Arrays

Stuck::::

float real_numbers [] = {11.1, 12.2, 13.3, 14.4, 15.5};

printf("float %ld bytes\n", sizeof (float)); printf("real_numbers %ld bytes\n", sizeof (real_numbers)); printf("Array real_numbers is %ld bytes\n", sizeof (real_numbers)/sizeof(float));

1 Answer

Hey Paul,

You are very close! You just have to make a couple adjustments and you will have it!

Challenge Task 1 of 3 "Declare a float array named real_numbers that will hold 5 float numbers." Can look like this: float real_numbers[5];

Delete your first printf statement because it is not needed. Delete this: printf("float %ld bytes\n", sizeof (float));

Challenge Task 2 of 3 "Using the printf function print the size in bytes of the variable real_numbers. Your output should look like the following: Array real_numbers is x bytes." Just add "Array" in front of your real_numbers and "is" after.

Challenge Task 3 of 3 "Print the length of the array real_numbers using the sizeof() function. Your output should look like the following: Array real_numbers can store x items." Just replace "is" with "can store" and change "bytes" to "items".

I told you that you were very close. Good luck!