How do I code this in c++

so far I'm able to ask the user data using cin and i don't know what should I do next

main o gets input from the user asking for a price (float) o displays price before conversion o calls function to convert o displays price after conversion UStoCA o takes in price parameter (float) o converts to CAD (Canadian dollars) - current conversion: - 1 USD = 1.31 CAD (approximately) o returns converted price (float)