You are going to write a program that gets an integer value from the user and
calculates the following:
1) additive persistence and the corresponding additive root
2) multiplicative persistence and the corresponding multiplicative root
You will continue to do so until the user quits.
Additive persistence and root
Additive persistence is a property of the sum of the digits of an integer. The sum
of the digits is found, and then the summation of digits is performed on the sum,

Question

You	are	going	to	write	a	program	that	gets	an	integer	value	from	the	user	and	
calculates	the	following:
1) additive	persistence	and	the	corresponding	additive	root
2) multiplicative	persistence	and	the	corresponding	multiplicative	root
You	will	continue	to	do	so	until	the	user	quits.
Additive	persistence	and	root
Additive	persistence	is	a	property	of	the	sum	of	the	digits	of	an	integer.	The	sum	
of	the	digits	is	found,	and	then	the	summation	of	digits	is	performed	on	the	sum,