Added my works from 2022

alg_4_3.cpp

@@ -0,0 +1,55 @@
+#include <iostream>
+using namespace std;
+
+double root(int n)
+{
+    double L, R, B;
+    L = 0; R = n;
+
+    while (fabs(R - L) > 0.00001)
+    {
+        B = (L + R) / 2;
+
+        if ( B*B > n)
+        {
+            R = B;
+        }
+        else {
+            L = B;
+        }
+    }
+    return B;
+}
+
+double root_hf_div(double n, double L, double R)
+{
+    double B;
+
+    if (fabs(R - L) < 0.00001)
+    {
+        return (L + R) / 2;
+    }
+    else
+    {
+        B = (L + R) / 2;
+
+        if ((B * B) > n)
+        {
+            return root_hf_div(n, L, B);
+        }
+        else
+        {
+            return root_hf_div(n, B, R);
+        }
+    }
+}
+
+int main()
+{
+    setlocale(LC_ALL, "Russian");
+	double n; cin >> n;
+
+    cout << "Обычный: " << root(n) << endl;
+	
+    cout << "Рекурсивный: " << root_hf_div(n, 1, n) << endl;
+}