Using C The root mean square is a specific kind of average w

Using C++:

The root mean square is a specific kind of average which is used for various purposes. This means that a sequence of values is squared and summed, then divided by the count of the values; the entire calculation is then square-rooted. Ask the user for input; stop when the user enters -1. Be sure to use the square and squareRoot functions:

float squareRoot (float s) {
float xn;
if (s == 0.0) {
return 0.0;
}
xn = s/2.0;
int counter = 1;
while (counter <= 10) {
xn = (xn + (s/xn))/2.0;
counter = counter + 1;
}

return xn;
}

and

int square (int what) {
int answer = what * what;
return answer;
}

#include <iostream>

using namespace std;

float squareRoot (float s) {
float xn;
if (s == 0.0) {
return 0.0;
}
xn = s/2.0;
int counter = 1;
while (counter <= 10) {
xn = (xn + (s/xn))/2.0;
counter = counter + 1;
}

return xn;
}

int square (int what) {
int answer = what * what;
return answer;
}

int main()
{
    //declare variables
    bool flag=true;
    int value=0;
    float sum=0;
    int cnt=0;

    //prompt the user until -1 is entered
    do
    {
        //prompt user for value
        cout<<\"Enter a value: \";
        cin>>value;
        //check if user is -1,exit
        if(value==-1)
        flag=false;
        else
        {
            //increment no of numbers
            cnt++;
            //find square root of nos and add to sum
            sum+=square(value);
        }
    }while(flag);
    //divide sum by total no of numbers inputted
    sum=sum/cnt;
    //find square root of sum value
    sum=squareRoot(sum);
    //display RSM
   cout << \"Root Mean Square Root of \" <<value<<\" is \"<<sum<< endl;

   return 0;
}