Add exams from exam156 to exam199

exam197/index.php

@@ -0,0 +1,49 @@
+<?php
+
+class BankAccount
+{
+
+    public $balance = 0;
+    public $type = '';
+
+    public function SetType($input){
+        $this->type = $input;
+    }
+
+    public function DisplayBalance()
+    {
+        return 'Balance: ' . $this->balance . '<br>'; 
+    }
+
+    public function Withdraw($amount)
+    {
+        if ($this->balance < $amount) {
+            echo 'Not enough money <br> ';
+        } else {
+            $this->balance = $this->balance - $amount;
+        }
+    }
+
+    public function Deposit($amount){
+        $this->balance = $this->balance + $amount;
+    }
+}
+
+class SavingsAccount extends BankAccount {
+}
+
+$alex = new BankAccount;
+$alex->SetType('18-25 Current');
+$alex->Deposit(100);
+$alex->Withdraw(20);        
+
+$alex_savings = new SavingsAccount;
+$alex_savings -> Deposit(40);
+$alex_savings->SetType('Super Saver');
+
+
+echo $alex-> type .' has ' .$alex->DisplayBalance();
+echo $alex_savings->type .' has ' .$alex_savings->DisplayBalance();
+
+
+?>