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

Tawanda Kanyangarara
Tawanda Kanyangarara
4,284 Points

what is the correct answer for this question, when i run it through xcode i get 5 but this keeps telling me i am wrong?

float real_numbers[5]; or float real_numbers[] = {11.11,22.22,33.33,44.44,55.55};

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

should print out 5 but it doesnt allow me to continue? any help please, i dont know why it doesnt work

1 Answer

Thomas Nilsen
Thomas Nilsen
14,957 Points
float real_numbers[5];
printf("Array real_numbers is %ld bytes.", sizeof(real_numbers));

What you wrote outputs the array length. You were asked to output the size of the array in bytes ;)

The last answer should look like this:

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