Write a program in C to provide some statistics about people who attend some conference. 100 persons attended the conference and you are required to:

1- Read the ages of all those persons and save them in an array.

2- Find the number of persons with age less than or equal to 30 and print it on screen.

3- Find the number of persons with age greater than 30 and print it on screen.

4- Find the average age and print it on screen.