Initial commit

src/lab3.cpp

@@ -0,0 +1,106 @@
+#include <labs.h>
+
+using IterationF = function<double(int i)>;
+using LoopF = function<double(int min, int max, IterationF &f)>;
+
+double iteration(double x, double i);
+double mp_for(int min, int max, IterationF &f);
+double mp_while(int min, int max, IterationF &f);
+double mp_do_while(int min, int max, IterationF &f);
+
+void lab3()
+{
+    LoopF loopF;
+    IterationF f;
+    double x, y;
+    int n;
+    char c;
+
+    cout << "Enter x: ";
+    cin >> x;
+
+    f = [=](int i)
+    { return iteration(x, i); };
+
+    cout
+        << "Enter N: ";
+    cin >> n;
+
+    loop // while (1)
+    {
+        cout << endl
+             << "Select mode (F/W/D): ";
+        cin >> c;
+
+        switch (c)
+        {
+        case 'f':
+        case 'F':
+            loopF = mp_for;
+            break;
+        case 'w':
+        case 'W':
+            loopF = mp_while;
+            break;
+        case 'd':
+        case 'D':
+            loopF = mp_do_while;
+            break;
+
+        default:
+            cout << "Invalid mode, exiting!" << endl;
+            return;
+        }
+
+        y = pow(loopF(1, n, f), 1.2 * x);
+        cout << "Result y(" << x << ") = " << y << endl;
+    }
+}
+
+double iteration(double x, double i)
+{
+    return 2.8 * pow(x, 4.5) + cbrt(i);
+}
+
+double mp_for(int min, int max, IterationF &f)
+{
+    double res = 1.0;
+
+    for (int i = min; i <= max; i++)
+    {
+        res += f(i);
+    }
+
+    return res;
+}
+
+double mp_while(int min, int max, IterationF &f)
+{
+    double res = 1.0;
+
+    int i = min;
+    while (i <= max)
+    {
+        res += f(i);
+        i++;
+    }
+
+    return res;
+}
+
+double mp_do_while(int min, int max, IterationF &f)
+{
+    double res = 1.0;
+
+    if (min >= max)
+        return res;
+
+    int i = min;
+    do
+    {
+        res += f(i);
+        i++;
+    } while (i <= max);
+
+    return res;
+}