What is the first action a programmer should take to utilize an existing programming library?

To utilize an existing programming library, the first action a programmer should take is to include the library in their code. This process typically involves using an import statement or a similar directive specific to the programming language being used. Including the library allows the programmer to access the functions and classes defined within that library, making them available for use in the current program.

By including the library, the developer ensures that the code can reference the library's components, which significantly enhances productivity by leveraging pre-written code instead of writing everything from scratch. This inclusion step is foundational and must happen before any actions related to loading or compiling the library, as it effectively establishes the relationship between the code and the library’s contents.

This initial step is crucial for making use of the functionality provided by the library, facilitating efficient programming practices and encouraging code reuse.