exit function added

@@ -2,17 +2,29 @@
 #include<iostream>
 using namespace std;
 
+void Exit(string words)
+{
+    if (words == "exit")
+    {
+        exit();
+    }
+
+    return;
+}
+
 void EchoProgram()
 {
     string words;
 
     cout << "Enter what you want to say : ";
     cin >> words;
+    Exit(words);
     cout << "\n\"" << words << "\"\n\n";
 
     return;
 }
 
+
 int main()
 {
     while (1)