These questions come from C how to program 6e deitel a) The impressive functions

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These questions come from C how to program 6e deitel

a) The impressive functions performed by computers essentially involve the manipulation of zero’s and ones.
b) People prefer to manipulate bits instead of characters and fields because bits are more compact.
c) People specify programs and data items as characters; computers then manipulate and process these characters as groups of zero’s and ones
d) A person’s zip code is an example of a numeric field.
e) A person’s street address is generally considered to be an alphabetic field in computer applications.
f) Data items processed by a computer form a data hierarchy in which data items become larger and more complex as we progress from fields to characters to bits etc.
g) A record key identifies a record as belonging to a particular field.
h) Most companies store their information in a single file to facilitate computer processing.
i) Files are always referred to by name in C programs.
j) When a program creates a file, the file is automatically retained by the computer for future references.

Explanation / Answer

Hope this helps. Let me know if you have any questions. Please rate. :) a) true b) false. People prefer to work with words (characters) because it is easier for humans to read/understand. c) true d) This could be true or false. I would argue that it is false for various reasons. The zip code must be either 5 characters or 10 characters (5 digits, then a "-" then 4 more digits). Storing it as a string or character array would better enforce this. Also, if a zip code starts with a 0, that 0 should still be part of the record, and if storing it as an integer, there wouldn't be a way to distinguish that. Some people would say true though, because it is numeric, integer data. Either one could be correct as long as you back up your claim. e) true f) false. The ordering of data items is backwards. Items become smaller and less complex as we progress from fields to characters to bits etc. Or Items become larger and more complex as we progress from bits to characters to fields etc. g) true h) false. Most companies store their information in many files (or databases) to protect the information. If they stored it in one file, then if that file's data were corrupted, all of the company's information would be corrupted. i) false. They are referred to by name to open them, and then they are referred to by a file handle. j) true

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