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Chapter 12: Problem 54

True or False A file may be opened in the definition of the file stream object.

Short Answer

Expert verified
Answer: True

Step by step solution

01

Understanding file stream objects

A file stream object provides a way to read and write data from or to a file in a specific programming language. It serves as a "bridge" between the program and the file, so you can perform operations like open, close, read, and write data. Opening a file means establishing a connection between the program and the file for further interaction.
02

Defining file stream objects

When defining a file stream object, you usually provide the file path (either relative or absolute), mode (like read, write, or append), and sometimes additional options (file encoding or buffering). After the object is defined, you can use it to perform operations on the associated file.
03

Opening a file in the definition of the file stream object

In many programming languages, it is common to open a file while defining a file stream object. The act of defining a file stream object often implicitly opens the file for operations based on the provided mode and options. An example in Python is using the `open` function to both define and open a file stream object: ```python file = open("example.txt", "r") ``` This code creates a file stream object named `file`, which is connected to the file "example.txt" in read mode. The file is also implicitly opened for reading.
04

Conclusion

Based on our understanding of file stream objects and their definition, it can be concluded that the given statement is True. A file may indeed be opened in the definition of the file stream object.

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Most popular questions from this chapter

If a program has read to the end of a file, what must you do before using either the seekg or seekp member functions?

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

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

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

Write code that opens the file data.txt for both input and output, but first determines if the file exists. If the file does not exist, the code should create it, then open it for both input and output.
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