From 8ae7a68f9bcc80cf52ace7039008ee64cd8ac8a2 Mon Sep 17 00:00:00 2001
From: Prateekgupta9819 <36070161+Prateekgupta9819@users.noreply.github.com>
Date: Tue, 30 Oct 2018 12:59:53 +0530
Subject: [PATCH 1/2] Update calculator.cpp

---
 Lesson-2/solutions/calculator.cpp | 48 ++++++++++++++++++++++++-------
 1 file changed, 38 insertions(+), 10 deletions(-)

diff --git a/Lesson-2/solutions/calculator.cpp b/Lesson-2/solutions/calculator.cpp
index 29608cc..085456e 100644
--- a/Lesson-2/solutions/calculator.cpp
+++ b/Lesson-2/solutions/calculator.cpp
@@ -1,12 +1,40 @@
-#include <iostream>
+# include <iostream>
+using namespace std;
+
 int main()
 {
-	int num1, num2, num3;
-	std::cout << "Enter any 3 numbers" << std::endl << "Number 1: ";
-	std::cin >> num1;
-	std::cout << "Number 2 ";
-	std::cin >> num2;
-	std::cout << "Number 3 ";
-	std::cin >> num3;
-	std::cout << num1 + num2 + num3;
-}
\ No newline at end of file
+    char op;
+    float num1, num2;
+
+    cout << "Enter operator either + or - or * or /: ";
+    cin >> op;
+
+    cout << "Enter two operands: ";
+    cin >> num1 >> num2;
+
+    switch(op)
+    {
+        case '+':
+            cout << num1+num2;
+            break;
+
+        case '-':
+            cout << num1-num2;
+            break;
+
+        case '*':
+            cout << num1*num2;
+            break;
+
+        case '/':
+            cout << num1/num2;
+            break;
+
+        default:
+            // If the operator is other than +, -, * or /, error message is shown
+            cout << "Error! operator is not correct";
+            break;
+    }
+
+    return 0;
+}

From eb476231305afe75a969406d0d4394abb3856db1 Mon Sep 17 00:00:00 2001
From: Prateekgupta9819 <36070161+Prateekgupta9819@users.noreply.github.com>
Date: Tue, 30 Oct 2018 13:01:52 +0530
Subject: [PATCH 2/2] Update helloworld.cpp

---
 Lesson-1/examples/helloworld.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lesson-1/examples/helloworld.cpp b/Lesson-1/examples/helloworld.cpp
index 3daff6e..f867057 100644
--- a/Lesson-1/examples/helloworld.cpp
+++ b/Lesson-1/examples/helloworld.cpp
@@ -4,4 +4,5 @@ int main()
 {
 //Hello World Demo
 cout << "Hello, World!";
+  return 0;
 }