From 9043777a109a4672f65038146379b917d527d72f Mon Sep 17 00:00:00 2001
From: Misha <admin@mishacloud.xyz>
Date: Thu, 2 Oct 2025 20:32:57 +0300
Subject: [PATCH] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=B8=D1=82?=
 =?UTF-8?q?=D1=8C=20task3.cpp?=
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---
 task3.cpp | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 task3.cpp

diff --git a/task3.cpp b/task3.cpp
new file mode 100644
index 0000000..506a6e5
--- /dev/null
+++ b/task3.cpp
@@ -0,0 +1,70 @@
+#include <iostream>
+using namespace std;
+
+void Pos(int* a, int n) {
+    int count = 0;
+    for (int i = 0; i < 3 && i < n; ++i)
+        if (a[i] > 0) ++count;
+    cout << "The number of the first 3 elements > 0: " << count << endl;
+}
+
+void Show1(int* a, int n) {
+    cout << "The last 3 elements: ";
+    for (int i = (n >= 3 ? n - 3 : 0); i < n; ++i)
+        cout << a[i] << " ";
+    cout << endl;
+}
+
+void Show2(int* a, int n) {
+    int* b = new int[n];
+    for (int i = 0; i < n; ++i) b[i] = a[i];
+
+    for (int i = 0; i < n-1; ++i)
+        for (int j = i+1; j < n; ++j)
+            if (b[i] > b[j]) { int t = b[i]; b[i] = b[j]; b[j] = t; }
+    cout << "The three smallest elements: ";
+    for (int i = 0; i < 3 && i < n; ++i) cout << b[i] << " ";
+    cout << endl;
+    delete[] b;
+}
+
+typedef void (*searchFunc)(int*, int);
+
+void service(int* a, int n, searchFunc f) {
+    f(a, n);
+}
+
+int main() {
+    srand(time(NULL));
+    int n;
+    cout << "n(n>=3)= ";
+    cin >> n;
+    if (n < 3) {
+        cerr << "Error: size Array!!";
+        return 1;
+    }
+    int* arr = new int[n];
+    for (int i = 0; i < n; ++i)
+        arr[i] = rand() % 41 - 20;
+
+    cout << "Array: ";
+    for (int i = 0; i < n; ++i) cout << arr[i] << " ";
+    cout << endl;
+
+    searchFunc arrFunc[3] = { Pos, Show1, Show2 };
+
+    cout << "Menu:\n"
+         << "1) The number of the first 3 elements > 0\n"
+         << "2) Show the last 3 items\n"
+         << "3) Display the 3 smallest elements\n"
+         << "Select an action (1-3): ";
+    int choice;
+    cin >> choice;
+    if (choice >= 1 && choice <= 3)
+        service(arr, n, arrFunc[choice-1]);
+    else
+        cout << "Incorrect choice!\n";
+
+    delete[] arr;
+    return 0;
+}
\ No newline at end of file