diff --git a/TransferSendCall.sol b/TransferSendCall.sol
index 5598455..2b2325f 100644
--- a/TransferSendCall.sol
+++ b/TransferSendCall.sol
@@ -1 +1,41 @@
-Ez egy demo
\ No newline at end of file
+// SPDX-License-Identifier: GPL-3.0-or-later
+pragma solidity ^0.8.11;
+
+contract Sender{
+    constructor() payable {}
+
+
+    function balance() public view returns (uint) {
+        return address(this).balance;
+    }
+
+    function sendwithtransfer(address payable _addr) public {
+        _addr.transfer(1 ether);
+    }
+
+    function SendWithSend(address payable _addr) public returns (bool) {
+        bool sent = _addr.send(1 ether);
+        return sent;
+    }
+
+    function SendWithCall(address payable _addr) public returns (bool) {
+        (bool sent,) = _addr.call{value: 1 ether }("");
+        return sent;
+    }
+}
+
+
+contract Receiver{
+
+    uint public a;
+    uint public b;
+
+    receive() external payable{
+    a = 9;
+    b = 10;
+}
+
+    function balance() public view returns (uint) {
+        return address(this).balance;
+    }
+}