# (Solved Homework): The aim of this assignment is practice the use of while loops and conditionals statements. You are going to wri…

Trying to write this program in C++, if you read the attachments, I am just starting to learn about loops (for, while, etc.) and if/else statements. I’d really appreciate if someone can show me a program for this in C++ that is not too far above my understanding of C++.

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INSTRUCTIONS

The aim of this assignment is practice the use of while loops and conditionals statements. You are going to write a program that prompts the user for an integer and then determines the additive persistence and corresponding additive root. You will continue prompting the user for an integer until they enter a negative number which indicates they are finished

## Expert Answer

#include <iostream>
#include <string>
using namespace std;
int sum_of_digits( int n )
{
int sum=0;
while(n!=0)
{
sum = sum + n % 10;
n = n / 10;
}
return sum;
}
void additive_persistence( int n )
{
int addtv_pers = 0 ;

while( n > 9 )
{
++addtv_pers ;
n = sum_of_digits(n) ;
}

cout<<“additivepersistence: “<<addtv_pers;
cout<<“nadditive root: “<<n<<“n”;
}
int main()
{
long int n;
do
{
cout<<“Enter numbern”;
cin>>n;
if(n<=0)
{cout<<“Error”;
break;
}
else if(n<=9)
{
cout<<“additive persistence: 0n”;
cout<<“additive root: “<<n<<“n”;
}
else
{
additive_persistence( n );
}

}while(n>0);
}

Output:-

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