Question

What are the 2 parts of evaluation (dynamic semantics) of the if statement if e1 then e2 else e3?

Answer 1

The two parts of the evaluation of an if statement are evaluating the condition and executing the branches based on that evaluation's outcome.

Step-by-step explanation:

The evaluation of an if statement in programming languages, which is a part of dynamic semantics, primarily involves two parts:

1. Evaluation of the condition: First, the condition expression e1 is evaluated to determine its truth value. If e1 evaluates to true, then e2 is executed; otherwise, e3 is executed.
2. Execution of the branches: Based on the result of the condition e1, either the then-branch e2 is executed if the condition is true, or the else-branch e3 is executed if the condition is false.

Each branch can have its own set of operations and can lead to different outcomes depending on which path is taken. This construct allows programmers to control the flow of execution and make decisions within their code.