sqrt in c++ which library code example

Example 1: sqrt in c++

#include <cmath>
sqrt(x);

Example 2: 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;
}