manual sqrt in c++ code example

Example 1: sqrt() function in c++

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
	double x = 10.25, result;
	result = sqrt(x);
	cout << "Square root of " << x << " is " << result << endl;

	return 0;
}

Example 2: finding square root geeks'

# THIS METHOD IS CALLED NEWTON-RAPHSON METHOD
n = 23049234
sq =1          # you can take it as any positive number
i = 0
for i in range(n):    
    temp = sq
    sq = (sq + n/sq)/2
    i += 1
    if temp  == sq:  # as the value starts repeating we have reached the final precison
        break
print(sq)