英语翻译
Design a program for a computer store owner,which can be used to set up a computer system based on the customers requirements.Make up a file containing the data of the computer components available in the store.The program will display the system components chosen by the customer and the total cost ,as well as the cost of each component.Thecustomer should be able to change any component till customer gets a "dream machine".The program should output a receipt containing customer and computer system information.
At last the program should store the information of the customers to a file named"computer.dat".