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! While you're at it, check out some resources Treehouse students have shared here.

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

Posted by khristanyaburns
khristanyaburns
1,265 Points

Code Challenge: Array size and length

float real_numbers [2] = { 11.11 22.22 33.33 44.44 55.55 };

1 Answer

rayorke
rayorke
27,709 Points
rayorke
rayorke
27,709 Points

Hi Kristanya!

Arrays in C follow the general structure:

datatype arrayName [ arraySize ] = { value1, value2, value3, value4 };

If you just want to initialize an array and set its size:

float real_numbers[5];

Since you have the values for the array, you don't need to set the size of the array:

float real_numbers[] = { 11.11, 22.22, 33.33, 44.44, 55.55 };

You can omit the size of the array upon initialization, as it will simply determine the size based on the number of values that you give it. Also, make sure that you separate each value in the array with a comma ,

This is also valid:

float real_numbers [5] = { 11.11, 22.22, 33.33, 44.44, 55.55 };

I hope that helps to clarify!