Write a function which prints all elements of a square matrix in a diagonal scan order, starting at the top left corner. For instance, for the following matrix:

1 12 13 49

5 16 17 81

9 10 11 20

2 45 19 14

the output has to be: 1 5 12 9 16 13 2 10 17 49 45 11 81 19 20 14 You have to decide the function prototype. Write a program to test the function.

P/S: Solve this using C programming. Thanks!