In mathematics, the Nth harmonic number is defined to be 1 + 1/2 + 1/3 + 1/4 + … + 1/N. So, the first harmonic number is 1, the second is 1.5, the third is 1.83333… and so on.
Assume that n is an integer variable whose value is some integer N greater than 1.
Assume also that hn is a double variable whose value is the Nth harmonic number.
Write an expression whose value is the (N-1)th harmonic number.
hn - 1.0 /(n)