Behavioral Design Patterns in C++ - Basic Implementation-Interpreter

The video tutorial explains the implementation of the interpreter design pattern, focusing on creating abstract, terminal, and non-terminal expression classes. It demonstrates how to interpret arithmetic expressions using these classes and a parser function. The tutorial concludes with an overview of class interactions and a preview of future examples.

What is the primary purpose of the interpreter design pattern?

• To translate code from one language to another.

• To interpret and execute a program written in a specific language.

• To compile code into machine language.

• To optimize code for better performance.

What is the main function of the Abstract Expression class?

• To execute arithmetic operations.

• To define a method for interpreting expressions.

• To store data for the expression.

• To manage memory allocation for expressions.

In the Terminal Expression class, what is the role of the 'symbol' attribute?

• To define the type of the expression.

• To store the result of the expression.

• To hold a reference to the next expression.

• To represent a literal or symbol in the expression.

What does a Non-Terminal Expression represent in the interpreter design pattern?

• A single symbol or literal.

• A complete sentence or expression in the language.

• A variable declaration.

• A function call.

How does the Non-Terminal Expression class handle its contained expressions?

• By invoking the interpret method on each contained expression.

• By compiling them into a single expression.

• By storing them in a list and iterating over them.

• By converting them into a string format.

What is the purpose of the parser function in this implementation?

• To optimize the expression for faster execution.

• To compile the expression into machine code.

• To convert the expression into a different language.

• To parse and interpret a simple arithmetic expression.

How do the classes in the interpreter design pattern interact with each other?

• Via a class diagram that shows their relationships.

• By using a shared global variable.

• By exchanging data through a network.

• Through direct method calls.