/*
    This function takes in four integer values and returns a 
    single integer value depending upon the four values entered.
    The object of this exercise if to familiarize the student with
    nested 'if' statements.
*/
    
    
int if_function(int a,  int b,  int c,  int d)
{
	int r = 0;

	if (a > b)
	{
		r = a;
		if (a < c)
		{
			r += c;
		}
		else
		{
			if (b == d)
			{
				r += d;
				if (c > d)
					r += b;
				else
					r += d;
			}
			else
				r += 4;
			r += 5;
		}
	}
	else
		if (a >= c)
			r += 6;
		else
			r += 7;
	return r;
}