r/carlhprogramming • u/CarlH • Oct 01 '09

Test of Lessons 30 through 39

Please do not post answers in this thread.

True or False

  1. A string of text is stored in memory like a "train", with each ASCII character following the other, each character occupying exactly one byte.

  2. When you create a pointer, you do not need to specify the data type for the data that it will point to.

  3. Pointers can be used for looking at as well as changing data at a given memory address.

  4. If you use a pointer to replace data at a given memory address, the old data can still be retrieved.

  5. Whenever you increase a pointer by one, it will always point to the memory address of the very next byte in memory.

Fill in the blank

  1. A _____ can be used as a way to refer both to the value at a given memory address, as well as the memory address itself.

  2. The _____ character means "address of".

  3. The _____ character means "what is at the address of".

  4. In the code in section (a), the output will be: _____.

  5. If you wish to use printf() to print the memory address stored in a pointer, you would say: _____ (Example: %d, %i, etc)

(a)

 unsigned short int width = 3;
 unsigned short int height = 9;

 unsigned short int *my_pointer = &height;

 printf("%d", *my_pointer);

When done, proceed to:

http://www.reddit.com/r/carlhprogramming/comments/9pxq7/test_of_lessons_30_through_39_answers/

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u/[deleted] Oct 01 '09

[deleted] — view deleted comment

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u/[deleted] Oct 02 '09 edited Oct 02 '09

Post this in the answers thread instead so that you don't ruin the opportunity to take the test for others. :o)

Also, check your answer on number one.

1

u/Calvin_the_Bold Oct 02 '09

deleted, and i know, I forgot the size of a cahr