What Is a Form Constant?

The "formal parameters" in a custom function are all called "formal parameters" Since they are not actual variables, they are also called dummy variables. Arguments and formal parameters can have the same name.

Formal parameter

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The English name is different: the formal parameter is parameter, and the actual parameter is argument.

Essentially different: the essence of a formal parameter is a name that does not take up memory space. The essence of the argument is a variable that has taken up memory space.

The status in Javadoc or MSDN is different: Javadoc and MSDN refer to which parameters a method has, often using the word parameter. Only when the programmer actually uses this method is the argument.

When debugging, the parameter is changed to argument. At this time, the word argument is often not used, but it is called variable because the argument is essentially a variable that occupies a space in memory.