Help me now i must write program control washing machine use RTX ,can give me some hints?
"..actually it so hard for me"
The object of homework is for you to practice what you've learned in class and through your own personal study.
If the homework is really too hard for you, then you have a problem with the course and should speak to your tutors urgently!
"i dont know how to write use RTX"
Did the assignment specifically say that you had to use it? If not - then, as Erik says, don't use it!
If the assignment did specifically say that you had to use it then, presumably, it has already been covered in class or part of the task is for you to find out how to use it!
my teacher give me a big homework,he only for title :"write program control washing machine (rigid axle) use RTX. write by keilc. that's problem.hjchjc
"my teacher give me a big homework"
The fact that he gave it to you means that he expects that you should be capable of doing it.
"he only for title: 'write program control washing machine (rigid axle) use RTX. write by keilc.' that's problem"
If you don't think that's an adequate specification, then you need to get your teacher to clarify it - nobody else can do that for you!