New with C...need help!!

Hi, I'm really new to C programming and I don't know the answers to a few practice exam questions that the teacher provided for us to review with. If anyone could help me out that would wonderful :-) thank you!

1) Which of the following would be passed by address without the use of the address operator?
A. An array of structures
B. A single structure
C. Any element of a structure.
D. None of the Above

I think it is A...not at all sure though

2) Given a string, str1, with a size of SIZE, where would you find the delimiter after the user inputs a value that does not exceed the size of the array?
a. SIZE
b. SIZE -1
c. strlen(str1)
D.None of the above

I think this one is C, but i thought the delimiter would be after the last value of the string?

for #1 you are correct--arrays are passed by reference. the address of the array is passed, not the entire array contents.

for #2 i would say b. say we have an array of 10 characters (SIZE = 10). we can initialize the 'string' to "hi\0". if you then do strlen(str1) youll get 2, however the array can actually hold 10. writing to index 2 isnt out of bounds, index 10 is out of bounds (SIZE-1 = 9 isnt out of bounds).

edit:

Quote:

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Originally Posted by man strlen

RETURN VALUES

The strlen() function returns the number of characters that precede the
terminating NUL character.

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thanks for the help!

A and C are the answers, I believe. Looks like you understand it.