What type of functions do I need to do in c++?

Question

Hello I need help I am new started in c++ if anyone know what functions do I need to use if I am been given a number which will refer to price. Examples where the user put a number will come the price.. Thanks your

Answer 1

https://www.sololearn.com/Course/CPlusPlus/?ref=app
I don't know what you mean, but I think this will help a bit.
Can you explain a bit more about your problem?

Answer 2

Example I have been give a barcode of the item and price and when the user put barcode will come price what functions