initial commit

Python/OOP3/test.cpp

@@ -0,0 +1,27 @@
+#include <cmath>
+#include <iostream>
+
+bool isPrime(const int number) {
+    if (number == 1) {
+        return false;
+    }
+    if (number == 2 || number == 3) {
+        return true;
+    }
+    if (number % 2 == 0) {
+        return false;
+    }
+    int border = sqrt(number) + 1;
+    for (int i = 3; i < border; i += 2) {
+        if (number % i == 0) {
+            return false;
+        }
+    }
+    return true;
+}
+
+int main() {
+    for (int i = 1; i < 1000; i++) {
+        std::cout << i << ' ' << (isPrime(i) ? "true" : "false") << '\n';
+    }
+}