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

Posted by Chris Taylor
Chris Taylor
3,446 Points

declare a float that is a size 5

So would it be 15 bytes in 5 floats im not sure what its asking

John W
John W
21,558 Points

Declare a float array of size 5, i.e. 5 floats in the array

Mike Baxter
Mike Baxter
4,442 Points
Mike Baxter
Mike Baxter
4,442 Points

John, shouldn't that be called "count" and not "size"? Unless I'm mistaken, a 32-bit float should have size 4 (sizeof(float) in C is returned in bytes), so a 5 float array should have a size of 20, right? Maybe "size" is poor wording for that question?

1 Answer

John W
John W
21,558 Points
John W
John W
21,558 Points

Or length... depending on the language you are used to. And yea, the question could be worded better.

You don't need to know the actual size of a float in this case, just use the syntax for defining an array that allows you to specify the number of elements.