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

Posted by Alain Holly
Alain Holly
734 Points

array can store x items

I don't what I'm missing? it's asking me to find How many real_number can the array hold?

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 (float) / sizeof(real_numbers));

array_length.mm 
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 (float) / sizeof(real_numbers));

1 Answer

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

You didn't get the Array length right, here's one way to calculate the length of Array

sizeof(real_numbers)/sizeof(real_numbers[0])