this is c++

5. Write a program that calculates the average rainfall for three months. The program should ask the user to enter the name of each month, such as June or July, and the amount of rain (in inches) that fell each month. The program should display a message similar to the followingThe average rainfall for June, July, and August is 6.72 inches. Instructions: a. Use variables of type string in your implementation. b. Implement all three types of validation (if / else, while, and do / while) to validate each value related to rainfall