What is required for all function calls?

Output values are the results returned by a function after it has completed execution. While they are important to the functionality of the program, they are not strictly required for the invocation of a function itself. A function can be called without returning any output, particularly if it performs an action such as printing to the console.

Parameters are optional inputs that a function can accept to operate on. While many functions require parameters to perform their tasks, not all functions do. A function can be defined without parameters, and it can still be called successfully without providing any arguments.

Input arguments are the actual values passed to a function's parameters when it is called. Like parameters, they are not mandatory for every function. Functions can be called without arguments if they do not require any input to execute, demonstrating that input arguments are not a universal requirement for all function calls.