Input parameters in function calls

When functions are called, a distinction must be made between functions without input parameters and functions with input parameters.

Note

The syntax rules for function calls, including abbreviation options, are described in the sections below. However, the abbreviation options should be used only if evaluation remains straightforward. In accordance with the rules of structured programming and, above all, for the sake of ease of maintenance, function calls should be entered in as complete a form as possible.

The syntax of function calls without input parameters and the syntax of function calls with input parameters are dealt with separately in the next two sections in order to keep the syntax representations clear.