Write a program that uses exactly two variables, say a and b.
Assign values to a and be, and without having to use third variable,
interchange values of a and b.
eg.
Let a =2 and b = 3. At the end of the program, without using any
other variable, output should be a=3 and b =2.

Available from: Wednesday, 2 September 2009, 10:20 AM
Due date: Wednesday, 9 September 2009, 10:20 AM