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

Posted by Paul Hennig
Paul Hennig
1,596 Points

Arrays

Stuck::::

float real_numbers [] = {11.1, 12.2, 13.3, 14.4, 15.5};

printf("float %ld bytes\n", sizeof (float)); printf("real_numbers %ld bytes\n", sizeof (real_numbers)); printf("Array real_numbers is %ld bytes\n", sizeof (real_numbers)/sizeof(float));

1 Answer

Ryan Striker
Ryan Striker
6,525 Points
Ryan Striker
Ryan Striker
6,525 Points

Hey Paul,

You are very close! You just have to make a couple adjustments and you will have it!

Challenge Task 1 of 3 "Declare a float array named real_numbers that will hold 5 float numbers." Can look like this: float real_numbers[5];

Delete your first printf statement because it is not needed. Delete this: printf("float %ld bytes\n", sizeof (float));

Challenge Task 2 of 3 "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." Just add "Array" in front of your real_numbers and "is" after.

Challenge Task 3 of 3 "Print the length of the array real_numbers using the sizeof() function. Your output should look like the following: Array real_numbers can store x items." Just replace "is" with "can store" and change "bytes" to "items".

I told you that you were very close. Good luck!