What is the significance of using "return" in a function?

Using "return" in a function is significant because it outputs a value and stops the execution of that function. When the "return" statement is executed, the function immediately terminates, and control is passed back to the point where the function was invoked. The value specified in the return statement is then provided as the result of the function call. This mechanism allows functions to produce output that can be used in other parts of the code, ensuring that the data flow and logic remain clear and manageable.

In programming, being able to return a value from a function is crucial for encapsulating behavior and reusability. This allows for the development of modular code where functions can be constructed to perform specific tasks and return results that can be utilized elsewhere in the program, making the functions versatile tools for constructing complex logic and operations.