From fa79441e4722e3c4ab235956ac0a0868cc6314e0 Mon Sep 17 00:00:00 2001
From: root <root@1673805.xorek.cloud>
Date: Thu, 28 May 2026 19:31:27 +0300
Subject: [PATCH] add new demo file calculator c++/l5.cpp

---
 c++/l5.cpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 c++/l5.cpp

diff --git a/c++/l5.cpp b/c++/l5.cpp
new file mode 100644
index 0000000..45feaf4
--- /dev/null
+++ b/c++/l5.cpp
@@ -0,0 +1,38 @@
+#include <iostream>
+#include <string>
+
+int main() {
+	int s = 0;
+	while(s <= 3) {
+		std::string pol;
+		std::cout << "Знак" << std::endl;
+		std::cin >> pol;
+		double x1;
+		std::cout << "Первое число" << std::endl;
+		std::cin >> x1;
+		double x2;
+		std::cout << "Второе число" << std::endl;
+		std::cin >> x2;
+		if(pol == "+") {
+			std::cout << x1 << pol << x2 << "=" << x1+x2 << std::endl;
+			s++;
+		}
+		else if(pol == "-") {
+			std::cout << x1 << pol << x2 << "=" << x1-x2 << std::endl;
+			s++;
+		}
+		else if(pol == "*") {
+			std::cout << x1 << pol << x2 << "=" << x1*x2 << std::endl;
+			s++;
+		}
+		else if(pol == "/") {
+			std::cout << x1 << pol << x2 << "=" << x1/x2 << std::endl;
+			s++;
+		}
+		else {
+			std::cout << "Неверный знак" << std::endl;
+			return 0;
+		}
+	}
+	return 0;
+}