Mathematical Operations and Logic

What is the super class of the dept class?

What is the name of the instance created from the student class?

What is the group of the instance y2?

What is the age of the instance y1?

What is the purpose of the 'unmake-instance' function in the rule?

How do you modify an instance in the given example?

What is the department name of the instance y3?

What is the purpose of the 'defrule delete' rule?

What is the mode 'r' used for when opening a file?

What is the syntax to create a new instance of a class 'student'?

What is the notation for the mathematical operation 2 multiplied by 2?

Which of the following notations represents the operation 4 divided by 2?

What is the notation for the equality operation where both sides are the same?

What is the result of the operation (neq a A)?

What is the notation for the greater than operation?

What is the length of the string 'a b c d'?

What is the result of the expression (str-cat 'Micro ' 'Computer')?

What is the purpose of the sub-string function?

What type of data is returned by the str-cat function?

What is the main difference between the str-cat function and the sub-string function?

What is the purpose of the rule 'Readline'?

What function is used to check if the end of the file is reached?

What is the purpose of the 'printout t ?d crlf' function?

What is the symbol used to open a file in read mode?

What is the purpose of the Clips format?

Mathematical operations in CLIPS can be represented in prefix notation, where the operator is written before the operands.
Examples of mathematical operations include:
2*2 => (* 2 2)
4/2 => (/ 4 2)
1+3 => (+ 1 3)
4>3 => (> 4 3)
2=2 => (= 2 2)

A class can be defined using the defclass function, which specifies the slots and their types.
Example: (defclass student (is-a USER) (slot name) (slot age) (slot address))
An instance can be created using the make-instance function, which specifies the class and the values for the slots.
Example: (make-instance [y1] of student (name ahmed) (age 44) (address tanta))

A rule can be defined using the defrule function, which specifies the conditions and actions.
Example: (defrule r2 => (make-instance [y1] of student (name ahmed) (age 44) (address tanta)) ... )
Rules can be used to create instances, print messages, and delete instances.
Example: (defrule delete ?inst => (unmake-instance ?inst) (printout t “this instance was deleted “ ?inst crlf))

A file can be opened using the open function, which specifies the file name and mode.
Example: (open "d:\text.txt f1 "r")
The readline function can be used to read a line from a file.
Example: (bind ?d (readline f1)) (if (eq ?d EOF) then (break)) (printout t ?d crlf)
The format function can be used to send formatted output to a device.
Example: (format t "~~10tHello, World!~~%" )