8.5 Write a portable program using do-while that uses getchar to accept a string of letters in either case from the keyboard and then reverses the case of the string. The program must be independent...

8.5 Write a portable program using do-while that uses getchar to accept a string of letters in

either case from the keyboard and then reverses the case of the string. The program must be

independent of the character set used by the machine.

8.6 Write a program that uses a for loop to print the following pattern:

1

2 3

4 5 6

7 8 9 10