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

I ran my answer in Xcode and I got no errors....

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.

My answer:

{ float real_numbers [5]={1.1,2.2,3.3,4.4,5.5}; printf("float is %ld bytes", sizeof(float)); printf("real numbers is %ld bytes", sizeof(real_numbers)); printf("Array real_number is %ld bytes", sizeof(real_numbers)/sizeof(float)); return 0; }

am I wrong? If so, please point out my error.

Thanks, Jay

2 Answers

Rodrigo Chousal
Rodrigo Chousal
16,009 Points

Hi Jay,

First off, there is no need for the curly braces. You are not asked to specify the contents of the array real_numbers, so you should just leave it at float real_numbers [5];

Your code should look like this:

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));

Got it!! Thank you much Rodriigo!!