Chapter 13 Advanced File Operations

backwards

A negative offset causes the file's read or write position to be moved _____ in the file from the position specified by the mode.

fields

A record is a complete set of information about a single item and is made up of ______.

filename

All files are assigned a(n) ____ that is used for identification purposes by the operating system and the user.

opened

Before a file can be used, it must first be ______.

0

If a file fails to open, the file stream object will be set to ______.

structs

In C++, _____ provide convenient way to organize information into fields and records.

sequential

In ____ file access, the contents of the file are read in the order they appear in the file, from the file's start to its end.

random

In _____ file access, the contents of a file may be read in any order.

get

The ___ member function reads a single character from a file.

seekg

The ____ member function moves a file's read position to a specified byte in the file.

tellg

The ____ member function returns a file's current read position.

ios::cur

The ____ mode flag causes an offset to be calculated from the current position in the file.

getline

The _____ function reads a line of text from a file.

fstream

The _____ header file is required for file I/O operations.

seekp

The _____ member function moves a file's write position to a specified byte in the file.

read

The _____ member function reads "raw" binary data from a file.

.eof()

The _____ member function reports when the end of the file has been encountered.

tellp

The _____ member function returns a file's current write position.

write

The _____ member function writes "raw" binary data to a file.

put

The _____ member function writes a single character to a file.

ios::beg

The _____ mode flag causes an offset to be calculated from the beginning of a file.

ios::end

The _____ mode flag causes an offset to be calculated from the end of a file.

<char*>

The _____ operator is necessary if you pass anything other than a pointer to char as the first argument of the two functions mentioned in question.

fstream

The ______ file stream data type is for output files, input files, or files that perform both input and output.

ifstream

The _______ file stream data type is for input files.

ofstream

The ________ file stream data type is for output files.

cout

The same formatting techniques used with _____ may also be used when writing information to a file.

ifstream ofstream fstream

The three file stream data types are ______, _______, and ______.

close

When a program is finished using a file, it should ____ it.

ofstream people("people.dat");

Write a statement that defines a file stream object named people. The object will be used for file output.

istream pets;

Write a statement that defines a file stream object named pets. The object will be used for file input.

fstream places("places.dat");

Write a statement that defines a file stream object named places. The object will be used for both output and input.

ofstream people("people.dat", ios::out); people.open("people.dat", ios::out);

Write two statements that use the people file stream object to open a file named people.dat. (Show how to open the file with a member function and at definition.) The file should be opened for output.

ifstream pets("pets.dat", ios::in); pets.open("pets.dat", ios::in);

Write two statements that use the pets file stream object to open a file named pets.dat. (Show how to open the file with a member function and at definition.) The file should be opened for input.

fstream places ("places.dat", ios::in | ios::out); places.open("places.dat", ios::in | ios::out);

Write two statements that use the places file stream object to open a file named places.dat. (Show how to open the file with a member function and at definition.) The file should be opened for both input and output.

Binary

_____ files contain data that is unformatted and not necessarily stored as ASCII text.

Text

______ files contain information formatted as ASCII text.