View Code of Problem 74

#include<bits/stdc++.h>
using namespace std;
int main() {
	int x;
	scanf("%d", &x);
	double x1, x2;
	x1 = x;
	x2 = (x1 + x / x1) / 2;
	while (fabs(x1 - x2) > 0.00001) {
		x1 = x2;
		x2 = (x1 + x / x1) / 2;
	}
	printf("%.03lf\n", x2);
	return 0;

}