Create Structs_and_functions

/*
1. Design a structure template for this data.
2. Using the structure template in part (1) above, write a program to do the following:
a) Calculate and display the average sunshine per day for each city (note: 31 days in July).
b) Calculate and display the average temperature for all the cities.
c) Calculate and display the difference between the city with the highest average rainfall and the city with the lowest average rainfall.