Then being improved based on this,a particle system which could be used to define its figure freely by adjusting the parameters and overriding the virtual functions easily is constructed.

The process on virtual function by c++ (OOP language),compilier is introduced i n this article And several cases in rewriting the child class in base class are also dicussed here to help the programmer deepen recognition on virtual functio

In this paper,by analyzing the virtual function table of its key skills,the process and essentials of the dynamic merging technique are interpreted.

In this paper,for MIMO control system,the influences of the output function on the system performances in nonlinear control design are discussed.

A programmable logical controller (PLC) is used to realize the battery packaging machine control system in this paper, the input function, process function and output function are used to realize programme modulisation on control software.

the output functions of some coommon discrete systems can be easily obtained and numerical basis can be provided for further researches of the various properties of the systems.