It is important to check the return value when making an fopen() call because the call is really a request to the operating system to open a file.

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Checking the return value of fopen() is crucial because it indicates whether the file was successfully opened. If fopen() fails, it returns NULL, signaling an error such as the file not existing or lacking permissions, which allows the program to handle these situations gracefully.

It Is Important to Check the Return Value When Making