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

David Kuder
David Kuder
1,370 Points
Posted by David Kuder
David Kuder
1,370 Points

printing the length of an array.

i am trying to print the length of an array using the sizeof function but I am unable to get it right. Can you show me what I am doing wrong?

Ron McCranie
Ron McCranie
7,837 Points
Ron McCranie
Ron McCranie
7,837 Points

You should show your code. You may not in fact be using an array and that might be why it's not working.

2 Answers

Ron McCranie
Ron McCranie
7,837 Points
Ron McCranie
Ron McCranie
7,837 Points

You should show your code. You may not in fact be using an array and that might be why it's not working.

Rodrigo Chousal
Rodrigo Chousal
16,009 Points
Rodrigo Chousal
Rodrigo Chousal
16,009 Points

This should be it:

Challenge 1 of 3:

float real_numbers [5];

Challenge 2 of 3:

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

Challenge 3 of 3:

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