Write a program using nested loops to produce a rectangle of *'s with 6 rows and 20 *'s per row.

Given three numbers A, B and C, write a program to write their values in an ascending order. For example, if A = 12, B = 10, and C = 15, your program should print out:

Smallest number = 10
Next higher number = 12
Highest number = 15

Write programs using nested loops to produce the following patterns:

0
2 2
4 4 4
6 6 6 6
8 8 8 8 8

Write programs using nested loops to produce the following patterns:

A
B B
C C C
D D D D
E E E E E