2.2 Programming Fundamentals Knowledge Check

.endOfFile() could be used in:

• To indicate the end of a line with a formatting delimiter
• Conditional loops when writing to a file
• Conditional loops when reading from a file
• Destructive overwriting of the file’s data

The following is not a valid file open mode:

• Delete
• Append
• Read
• Write

The following is a correct way to write to a file:

• myFile.readLine(variable)
• myFile.writeLine(variable)
• myFile.AppendAll(variable)
• myFile.InsertAll(variable)

The most appropriate file mode for creating a daily log of entries:

• Read
• Write
• Append
• Close

The following is a valid way to write the contents of a 2D array to a text file:

• Concatenate each row to a string with commas and then concatenate all rows with new line characters
• Split the text file into an array, copy all elements to this array
• Use SQL to convert 2D array to records first

Why would you use good code maintainability when writing a program?

• Reduces the number of lines of code
• Improves how quickly the program runs
• Makes code easier to read and debug
• All the options are true

Variable scope refers to:

• Variable data type
• Variable identifier
• Logic errors associated with a variable
• The visibility of variables within a program

The advantages of parameter passing don’t include this:

• The same subprogram can be reused in more cases
• Makes it easier to use global variables
• More flexible coding
• Can cut down on the use of wasteful global variables

The main difference between procedures and functions is:

• Procedures are usually longer and have more instructions
• Functions use parameter passing, while procedures don’t
• Functions are more difficult to debug
• Functions may return values, while procedures don’t

If a variable appears within a sub program then it is likely to be...

• A global variable
• A local variable
• A parameter variable
• A constant