Write and test a function that creates Pascals Triangle in the square matrix passed to it. For

example, if it is passed the two-dimensional array a and the integer 4, then it would load the

following into a:

1 0 0 0 0

1 1 0 0 0

1 2 1 0 0

1 3 3 1 0

1 4 6 4 1

C++. please no need for using Prinft or scaft because this is a class beginer for C++