I want to design a c++ food order system with a data structure method.

It must contain some data structure methods. I checked others' work. They all do it with switch {case 1 case 2 case 3.....} please do not tell me this way.

Basically, the menu contains only 10 items. And there is only one user to order the food. The program should remember what the user ordered and caculater the total price.