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Eileen Zimmerman
3,047 PointsObjective-C Basics Code Challenge: Array Length
I cannot seem to pass step 2 of this challenge despite having run the code successfully in XCode.
The challenge says: "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."
This is the code I wrote: float real_numbers[5]; printf("array real_numbers is %ld bytes\n", sizeof(real_numbers)/sizeof(float));
I get this error from Treehouse: Bummer! Make sure you are calling printf and passing a string (not an NSString) and "real_numbers" as the parameters. The correct format option is '%ld'.
In Xcode the console correctly returns: array real_numbers is 5 bytes
What am I doing wrong here? Thanks for your help in advance.
2 Answers
Eileen Zimmerman
3,047 PointsWow, I feel like I just got an email from a celebrity! Thanks for the response Amit. Guess I tried to overcomplicate the challenge, haha.
Amit Bijlani
Treehouse Guest TeacherYou are almost right except that the challenge is asking only for the size of the real_numbers array and not the length of the real_numbers array. 5 is the length of the array and does not say how many bytes it contains. sizeof(real_numbers) will give you the size of the array in bytes.