Question

Review Questions 1. Which of the following opens the employ.txt file and allows the computer to write new data to the end of the file's existing data? a. outFile = IO.File.AddText("employ.txt") b. outFile = IO.File. AppendText("employ.txt") c. outFile = 10.File. InsertText("employ.txt") d. outFile = IO.File.WriteText("employ.txt") If the file to be opened exists, which method erases the file's contents? a. Append Text c. Insert Text b. Create Text d. Open Text Which of the following reads a line of text from a sequential access file and assigns the line (excluding the newline character) to the strText variable? a. inFile.Read(strText) c. strText = inFile.ReadLine b. infile.ReadLine(str Text) d. strText = inFile.Read(line) 4. What does the Peek method return when the end of the file is reached? a. -1 c. the last character in the file b. 0 d. the newline character

Answer 1

Ans 1. (b) outFile=IO.File.AppendText("employ.txt")

This is the only correct syntax amongst the given options to add data to the end of an existing text file. (a), (c) and (d) methods does'nt exist.

Ans 2. (b) CreateText

If the file to be opened exists this method will erase all the data inside it. Method (a) will add data to the end of an existing text file while method (c) and (d) does'nt exist.

Ans 3. (c) strText= inFile.ReadLine

This is the correct syntax to assign to strText, all the other options are not as per syntax.

Ans 4. (a) -1

The peek mehod will return -1 when it will reach the end of the file.

Ans 5. (a) IF IO.File.Exists("employ.txt") Then

This is the correct syntax to check if the file exists or not, all the other options are not as per syntax.

Ans 6. (d) none of the above

AppendText creates a StreamReader Object and none of the othe given options.

Ans 7. (c) StreamWriter

Both CreateText and AppendText creates a StreamWriter Object and none of the othe given options.

Though we are instructed to answer at max. one question, I have answered 7 of them, ENJOY!!!