DIY: Read N Characters Given Read4 II — Call Multiple Times
Understand how to solve the problem of reading n characters from a file using the read4 API, which reads four characters at a time. Learn to implement a function that manages multiple calls, efficiently handling the file pointer and buffer storage to return the correct number of characters each time you read.
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Problem statement
Suppose that you can only read a given File using a specific API method called read4. You will implement the read method to read n characters from the File. This read method can be called multiple times.
read4() API:
The read4() API reads the next four consecutive characters from the File, until the File no longer has any characters that need to be read. After reading, the read4() method writes the characters into the array named buff.
The read4() method uses its own file pointer to keep ...