square root recursion problem

[jamesfarrow]

I am new to C++ - pleaase bear with me! Below is a bit of code to find square roots recursively. Although it works, the answer is always 7 characters long? I can not seem to increase the accuracy of the answer by getting more decimal places?

Can anyone help please...!

  #include<iostream>
#include<cmath>

using namespace std;

double sqroot (double number,long double previteration);

double roottofind;

int main()
{
	cout << "Input a number to find the square root: ";
	cin >> roottofind;
	cout << roottofind << endl;
	double firstiteration = roottofind/2;
	cout << "Squareroot is: " << sqroot(roottofind,firstiteration);
	cout << endl;
	return 0;

}

double sqroot (double number,long double previteration)
{	
	long double root = (0.5 * (previteration + (number/previteration)));	
	if (abs (previteration - root) >= 0.00000000000001)
		return sqroot(number,root);
	else
		return root;
}

[jamesfarrow]

Thank you very much!!

Problem solved :)