1 Write a program that calculates and prints the average of several integers. Assume the last value read with scanf is the sentinel 9999.

An example input sequence would be: 10 8 11 7 9 9999 Indicating that the average of all the values preceding 9999 is to be calculated.

2 Write a program that uses a for loop to calculate and print the sum of the even integers from 2 to 30.

Make sure you use meaningful variable names and that you add comments to your code.

You should submit your code and a sample of the input and output in a single pdf document.4