C++ (Lo Shu Magic Square)

A Lo Shu Magic Square is a 3 by 3 grid. The grid contains the numbers 1 through 9, inclusive. There may not be duplicate numbers. To qualify as a magic square, each row, column and diagonal must add up to the same number. In this example, that number is 15, but it can be any number as long as they all add up to the same number. You can simulate a magic square by using a 2 dimensional array. Design a program which initializes a 2 dimensional array with values entered by the client. Remember, the client cannot enter duplicate numbers, 1 - 9 inclusive only! Your program should then determine if the values entered is a Magic Square.