From 2af7aac08e3bae3ed6e99fe04c32d39acb4bb129 Mon Sep 17 00:00:00 2001
From: Angel Dimitriev <achi_d@abv.bg>
Date: Tue, 2 Nov 2021 14:34:38 +0200
Subject: Add files via upload

---
 Sem. 04/example01_with_functions.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Sem. 04/example01_with_functions.cpp

(limited to 'Sem. 04/example01_with_functions.cpp')

diff --git a/Sem. 04/example01_with_functions.cpp b/Sem. 04/example01_with_functions.cpp
new file mode 100644
index 0000000..f33b6b9
--- /dev/null
+++ b/Sem. 04/example01_with_functions.cpp	
@@ -0,0 +1,27 @@
+#include <iostream>
+using namespace std;
+
+bool isPrime(int n)
+{
+	double temp = sqrt(n);
+
+	for (int i = 2; i <= temp; i++)
+	{
+		if (n % i == 0)
+			return false;
+	}
+
+	return true;
+}
+
+int main()
+{
+	int n;
+	cin >> n;
+
+	for (int i = 6; i < n; i += 6)
+	{
+		if (isPrime(i - 1) && isPrime(i + 1))
+			cout << i - 1 << " " << i + 1 << endl;
+	}
+}
\ No newline at end of file
-- 
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