I have a problem in solving these C++ Program.

The binomial expression can be expanded as follows

If n=2 a2+2ab+b2

N=3

A3+3a2b+3ab2+b3

1

1 2 1

1 3 3 1

The coefficients will be gotten using the combination ncm and its refered to as the pascal triangle

Such that if n=4 then;

4c0 4!/(4-0)!0!=1

4c1 4!/(4-1)!1!=4

4c2 4!/(4-2)!2!=6

1. write a function to compute the combinations

2. implement it in c++ program to output the pascal triangle for a number n.