finding the square root of a number

is there an easy (or even not easy) way to find the square root of a number in c++? like, well, actually i have no idea how you would do it.... is it even possible?

look up sqrt() in cmath.

Code:

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#include <iostream>
#include <ctype.h>
#include <math.h>

using namespace std;

int main()
{
        double find_sqrt;

        cout << "Enter a double: ";
        cin >> find_sqrt;

        cout << sqrt(find_sqrt) << endl;

        return 0;
}

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