As with other menu related functionality, a PPL subroutine is used to obtain user input ... Any valid variable name can be used in python. In this example, values of PPL D and F are assigned to d_m ...

To call it, a programmer uses the procedure name and includes any parameters (values) that the procedure needs, for example: SUBROUTINE f_TO_c(temperature_in_f) temperature_in_c ← (temperature ...

There are two types of subroutine: Procedures perform a specific task but do not return a value. Functions manipulate data and return a value to the main program. A local variable is a variable ...