What is the primary function of an interpreter in programming?

The primary function of an interpreter in programming is to execute and translate source code line by line. This means that as the interpreter reads the code, it converts each line into machine code (or an understandable form for the computer) and executes it immediately. This allows for immediate feedback during development, making it easier for programmers to test and debug their code since they can see the results of their code as it runs.

In contrast to compilation, which involves converting the entire source code into an executable file before running it, interpretation allows for more flexibility and interaction during the programming process. This is particularly beneficial in scripting languages and for rapid prototyping, where the ability to see immediate output is crucial for efficient development.