c2

1sem/adaptation courses/06/20.cpp

@@ -0,0 +1,28 @@
+// ac_6_20.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <cmath>
+using namespace std;
+
+double inline funk(int i) {
+    double out = 1;
+    for (int k = 1; k <= i; k++) {
+        out *= (1 - 1 / sqrt(k + i));
+    }
+    return out;
+}
+
+int main() {
+    double eps;
+    cout << "eps=";
+    cin >> eps;
+    int i = 0;
+    double aip = funk(++i);
+    double ai = funk(++i);
+    while (abs(ai-aip)>=eps) {
+        aip = ai;
+        ai = funk(++i);
+    }
+    cout << "a(i=" << i << ")=" << ai;
+    return 0;
+}