File handling and procedure

What is the first step in file handling?

• Opening a file

• Writing to a file

• Reading from a file

• Closing a file

What is the purpose of a procedure?

• To organize code into reusable blocks

• To perform calculations

• To handle exceptions

• To display messages

What is the general purpose of file handling in a program?

• To store data temporarily

• To perform calculations

• To permanent storage of data

• None of the above

What is a procedure in programming?

• a sequence of steps that is given an identifier and can be called to perform a sub-task

• A function that returns a value

• A class that contains methods

• None of the above

A procedure with no parameters is defined as follows

• PROCEDURE <identifier>

  <statement(s)>

  ENDPROCEDURE

• PROCEDURE <identifier>

  <statement(s)>

• PROCEDURE <identifier>(<param1> , <param2> ...)

  <statement(s)>

  ENDPROCEDURE

• PROCEDURE <identifier>(<param1> : <data type>, <param2> : <data type>...)

  <statement(s)>

  ENDPROCEDURE

Function: a sequence of steps that is given an identifier and returns a _____ value; function call is part of an expression

If a file does not exist, what will happen when you try to read from it?

• The program will crash

• The file will be created automatically

• An error will be raised

• Data will be read from another file

What is the difference between a function and a procedure?

• Functions return a value, procedures do not

• Procedures can have side effects, functions cannot

• Functions are used in object-oriented programming, procedures are not

• None of the above

A function with no parameters is defined as follows

• FUNCTION <identifier> RETURNS <data type>

  <statement(s)>

  ENDFUNCTION

• FUNCTION <identifier> RETURNS <identifier>

  <statement(s)>

  ENDFUNCTION

• FUNCTION <identifier>(<param1> : <data type>,

  <param2> : <data type>…) RETURNS <data type>

  <statement(s)>

  ENDFUNCTION

• FUNCTION <identifier>(<param1> : <data type>,

  <param2> : <data type>…) RETURNS <identifier>

  <statement(s)>

  ENDFUNCTION

Procedures defined as above should be called as follows, respectively:

• CALL <identifier>

• CALL <identifier>(Value1, Value2, ...)