What is the most fundamental difference between sub process and function process

What is the most fundamental difference between sub process and function process? I believe that many inexperienced people are at a loss about this, so this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

The most fundamental difference between the sub process and the function process is that the Sub process cannot return a value, while the Function process can return a value.

There are two types of processes in Visual Basic:

Internal functions and event procedures provided by the ① system

② users define it according to their own needs for multiple calls to event procedures, of which subprocedures are the most frequently used. What they have in common is a set of program code that performs a specific function; the difference is that a function is a special procedure with a return value, so there is a type description of the return value when the function procedure is defined.

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