Chapter 12: Problem 44

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.

Short Answer

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Answer: To open a file named "places.dat" for both input and output using a file stream object named "places", we can use either of the following solutions: 1. Create an fstream object named "places" and use the open() member function to open the file "places.dat" with both input and output modes. ```cpp #include std::fstream places; places.open("places.dat", std::ios::in | std::ios::out); ``` 2. Create another fstream object named "places", and while defining it, provide the filename and mode required to open for both input and output. ```cpp #include std::fstream places("places.dat", std::ios::in | std::ios::out); ```

Step by step solution

Include required header

First, include the necessary header file (fstream) before proceeding. ```cpp #include ```

Open the file using a member function

Create an fstream object named "places" and use the open() member function to open the file "places.dat" with both input and output modes. ```cpp std::fstream places; places.open("places.dat", std::ios::in | std::ios::out); ```

Open the file at the definition of the file stream object

Create another fstream object named "places", and while defining it, provide the filename and mode required to open for both input and output. ```cpp std::fstream places("places.dat", std::ios::in | std::ios::out); ``` Both of these solutions show how to open a file named "places.dat" using an fstream object named "places" for both input and output.

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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.

Short Answer

Step by step solution

Include required header

Open the file using a member function

Open the file at the definition of the file stream object

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