Merge pull request #22 from sahiljarngal/patch-1

program of simple calculator

Author: MdHRShohel

simplecalculator.cpp

@@ -0,0 +1,47 @@
+#include <iostream>
+using namespace std;
+
+
+main()
+{
+    char op;
+    float num1, num2;
+
+    // It allows user to enter operator i.e. +, -, *, /
+    cin >> op;
+
+    // It allow user to enter the operands
+    cin >> num1 >> num2;
+
+    // Switch statement begins
+    switch (op) {
+
+        // If user enter + 
+        case '+':
+            cout << num1 + num2;
+            break;
+
+        // If user enter - 
+        case '-':
+            cout << num1 - num2;
+            break;
+
+        // If user enter *
+        case '*':
+            cout << num1 * num2;
+            break;
+
+        // If user enter /
+        case '/':
+            cout << num1 / num2;
+            break;
+
+        // If the operator is other than +, -, * or /, 
+        // error message will display
+        default:
+            cout << "Error! operator is not correct";
+            break;
+    } // switch statement ends
+
+    return 0; 
+}