J277.2.2.3.The basic file handling operations.

J277.2.2.3.The basic file handling operations.

by Mr. Shingari

​Walt

​Understand the basic file operations

Multiple Select

Which of the following files opens a file?

• myFile = openRead("sample.txt")

• myFile = openWrite("sample.txt")

• myFile.readLine()

• myFile.close()

• myFile.writeLine()

Multiple Select

Which of the following files opens a file to be read?

• myFile = openRead("sample.txt")

• myFile = openWrite("sample.txt")

• myFile.readLine()

• myFile.close()

• myFile.writeLine()

Multiple Select

Which of the following files opens a file to be written to?

• myFile = openRead("sample.txt")

• myFile = openWrite("sample.txt")

• myFile.readLine()

• myFile.close()

• myFile.writeLine()

Multiple Select

Which of the following reads a line from a file?

• myFile = openRead("sample.txt")

• myFile = openWrite("sample.txt")

• myFile.readLine()

• myFile.close()

• myFile.writeLine()

Multiple Select

Which of the following writes a line to a file?

• myFile = openRead("sample.txt")

• myFile = openWrite("sample.txt")

• myFile.readLine()

• myFile.close()

• myFile.writeLine("Hello World")

Multiple Select

Which of the following closes a file?

• myFile = openRead("sample.txt")

• myFile = openWrite("sample.txt")

• myFile.readLine()

• myFile.close()

• myFile.writeLine("Hello World")

Multiple Select

Which of the following blocks of code will open and read each line from a file?

Multiple Select

What does the code MyFile.endOfFile() do?

Answers: 2

• Closes the file

• Returns true if we have reached the end of the file?

• Returns false if we have not reached the end of the file?

​File handling operations

​Easy challenges: page 38

​Medium challenges: page 39