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

Posted by Drew Bentrott
Drew Bentrott
2,418 Points

I have no idea how to do this ...

Am I going to someone divide the byte sizes? Where do I start?

array_length.mm 
float real_numbers[] = {1.1, 2.2, 3.3, 4.4, 5.5}; 

printf("Array real_numbers is %ld bytes.", (sizeof(real_numbers));
Drew Bentrott
Drew Bentrott
2,418 Points

It's asking me to find how many items there are using "sizeof()" ...

1 Answer

Martin Granger
Martin Granger
14,521 Points
Martin Granger
Martin Granger
14,521 Points

You find the length by dividing the sizeof the array by the sizeof a float

printf("Array real_numbers can store %ld items.", sizeof(real_numbers) / sizeof(float));