Introduction - If you have any usage issues, please Google them yourself
Title: Highway Design billing system
Features: 1, at a highway exit fees, charges for three types of vehicles, large vehicles per km 0.5 yuan, mid-sized car per km 0.4 yuan, a small car per kilometer 0.3 yuan to cart experience of, by mileage that was the amount collected. When the shift to the statistics of the number of the total amount.
2, save: The data written to disk files, easy to deposit, take action.
Step by step:
1, the initial completion of the overall design, setting up the framework to determine the man-machine interface dialogue, to determine the function of the number
2, complete the minimum requirements: only three entrance of the establishment of a billing system, and to perform statistical calculations, print out the report
3, further requirements: 1) every time you log on disk when the file was last read in the total charges.
2) completion of any number of common system for the entrance