Chapters 6 & 7

Question 1

What type is used to create userfiles?

Answer 1

FILE

Question 2

If a file does not exist what does the append mode do?

Answer 2

Creates the file

Question 3

T/F When testing files you cannot replicate some errors such as physically bad media in order to test it properly

Answer 3

True

Question 4

What is considered auxiliary storage?

Answer 4

disk and tape

Question 5

What are the three types of standard file streams?

Answer 5

stdin, stdout, stderr

Question 6

Which C library contains the prototype statements for file operations

Answer 6

stdio.h

Question 7

If a file is opened in “r” mode, C…

Answer 7

…opens the file for reading and sets the file marker at the beginning

Question 8

If a file is not opened successfully C…

Answer 8

…continues processing with the next statement after the open

Question 9

what specifies the type of data that is being formatted in formatted input/output

Answer 9

conversion codes

Question 10

The two input functions that read text data and converts the data to the types specified by a format string are:

Answer 10

fscanf and scanf

Question 11

T/F scanf implicitly casts data to match the conversion code and its corresponding address parameter.

Answer 11

False

Question 12

which function reads the next character from the standard input stream and returns it value

Answer 12

getchar

Question 13

what happens when scanf finds invalid data in the input stream

Answer 13

it terminates the scanf function and leaves the invalid character in the input stream

Question 14

In a pretest loop is the condition tested before or after the statement is executed?

Answer 14

before

Question 15

What are the 4 steps when working with a file

Answer 15

1. Declare the file variable
2. Open the file
3. Use the file
4. Close the file

Question 16

File command for reading the file

Answer 16

fscanf (fileIn)

Question 17

File command for writing the file

Answer 17

fscanf (fileOut)

Question 18

File command for closing the file

Answer 18

fclose (fileIn);
fclose (fileOut);

Question 19

fgetc (fileIn);

Answer 19

read, and return one character from the file

Question 20

fputc (fileOut);

Answer 20

writing one character into the file

Question 21

When opening a file, what will be returned if the file
could not be opened?

Answer 21

NULL

Question 22

When reading from a file, what will be returned if the
end of file is reached?

Answer 22

EOF

Question 23

what kind of loop is a for loop?

Answer 23

Definite loop

Question 24

what kind of loop is a while loop?

Answer 24

indefinite

Question 25

what kind of loop is a do-while loop?

Answer 25

indefinite

Question 26

which loops are pre-test

Answer 26

for and while loops

Question 27

which loops are post-test

Answer 27

do-while loops

Question 28

Which three statements shouldn’t have a semicolon after the statement?

Answer 28

For, While, If

Question 29

How do you declare a File reference variable

Answer 29

FILE *fileIn
FILE *fileOut

Question 30

What does the “r” stand for in file commands?

Answer 30

read

Question 31

What does the “w” stand for in file commands?

Answer 31

write

Question 31

What does the “r” stand for in file commands?

Question 32

what is recursion?

Answer 32

The process where a function calls itself to
solve a problem.

Question 33

what is a loop update

Answer 33

An action that causes the loop limit test to change from true to false

Question 34

T/F The update for a pretest loop must be a part of the loop body.

Answer 34

True

Question 35

T/F Initialization code is explicitly required in all loops.

Answer 35

False

Question 36

T/F Loop updates: The number of updates always equals the number of loop iterations.

Answer 36

False

Question 37

which standard measure of efficiency is considered the most efficient?

Answer 37

logarithmic