Week 3: Tuesday
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Q1. (50)

Write a program using the function getchar() that inputs a string of
characters.  It then encrypts the string using the following code: 'b' becomes
'a', 'c' becomes 'b', ..., 'a' becomes 'z', 'B' becomes 'A', 'C' becomes 'B',
..., 'A' becomes 'Z'.  Ignore any other character.  Output the encrypted string
using putchar(). You are not allowed to use scanf or printf. You can use ascii
code information to convert characters to integers.

Example: If input is
ah1 hHjD
output should be
zggGiC

Q2. (50)

Input 10 numbers and output the number of numbers greater than the average.
Example: Input 1 2 3 4 5 6 7 8 9 10 will have output 5.