You cannot use an expression when a function calls a parameter

Today, when calling a function, I want to add a parameter to it and use it directly (a+=1)

The compiler makes a decisive error and later knows that the function call parameter cannot use an expression, so it can only be written as

A+=1fun (a)

Note: This is not concise enough, it is said to be concise can be implemented with the MAP function and list comprehension, learning later this supplement

Thank you, Alex Wei, for answering my questions.

You cannot use an expression when a function calls a parameter