Introduction - If you have any usage issues, please Google them yourself
Programmed iterative method to find the cube root and cube root iteration formula :: Xi+1 = (2* Xi)/3+ a/(3* Xi* Xi)
Assumed that the initial value of X for a, a = 3,27 of value iteration | Xi+1- Xi | <10 epsilon., And be verified by calling pow (a, 1.0/3) function. .