függvényhívást

Függvényhívás, in English function call, refers to the process of executing a specific block of code, known as a function or subroutine, within a computer program. When a function is called, the program's execution flow is temporarily transferred to the called function. This allows for modularity and code reuse, as a single function can be invoked from multiple locations within a program.

During a function call, control is passed to the beginning of the function's code. Any arguments, or input values, that are specified in the function call are passed to the function and made available to its internal logic. These arguments can be of various data types and are used by the function to perform its intended operation.

Once the function has completed its execution, it may return a value to the part of the program that called it. This return value represents the result of the function's computation or operation. After the function returns, the program's execution resumes from the point immediately following the function call. This mechanism of transferring control, passing arguments, and returning values is fundamental to structured programming and is present in virtually all programming languages. The concept helps in breaking down complex problems into smaller, manageable, and reusable units of code.