I need help with this for c++ nothing crazy. It can't accept values of 0 or less for the price.

Write a program that outputs inflation rates for two successive years and whether the inflation is increasing or decreasing. Ask the user to input the current price of an item and its price one year and two years ago. To calculate the inflation rate for a year, subtract the price of the item for that year from the price of the item one year ago and then divide the result by the price a year ago. Your program must contain at least the following functions: a function to get the input, a function to 26. calculate the results, and a function to output the results. Use appro- priate parameters to pass the information in and out of the function. Do not use any global variables