QUESTION 40 input and output mus be closed to flush the data from bufered memory to the hard disk O True O False QUESTION 41 Data files must have either a control number or a sentinel number. O True O False QUESTION 42 The correct C statement to close an input or output file is closef. True False QUESTION 43 During normal program execution, a true condition is assigned a value of 1 and a false condition is assigned a value of -1 O True O False QUESTION 44 The first line of a function definition does not end with a semicolon, as shown below. code block> True False