A Moving to another question will save this response. Question 31 The given func

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A Moving to another question will save this response. Question 31 The given function is supposed to read an integer from a file and return the value of that integer. However integer? int read int (ifstream& infile) int int value 0, bool not found true, char ch, while (infile.get (ch) && not found) if (isdigit (ch)) infile int value, not found falses return int value, o A. The should be placed immediately before the statement that reads the integ B true and false should be switched o C not found should be replaced by found. The statement infil replace should be placed immed D The statement infile.unget should be placed immediately after the statement that reads the integer A Moving to another question will save this response.

Explanation / Answer

Ans: A

Here infile.get() -> in while loop, we are reading first character(digit) and movind pointer one step forward, so we are missing first charcter. TO make it available -> use infile.unget() before the statement that reads the integer from file so that first character will be availabl again

unget:
Decrements the internal get pointer by one, making the last character extracted from the input sequence available again as the next character to be read from the stream.

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