ETH savings vault

🔗 [View on Etherscan](https://etherscan.io/address/0x08e23ee221277bd62134341f8b1AC5334fDe9660)

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## ⚙️ Features

| Feature | Description |

|----------|--------------|

| 💸 Deposit ETH | Deposit ETH directly using the deposit() function or by sending ETH to the contract. |

| 🏧 Withdraw ETH | Withdraw your entire balance anytime using the withdraw() function. |

| 🔒 Non-reentrant | Withdrawals are protected with a simple reentrancy guard. |

| 🪙 No Input Fields | Every function operates with no parameters for simplicity and safety. |

| 📊 View Balances | Use getMyBalance() or totalVaultBalance() to check ETH balances. |

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## 🧠 How It Works

1. Deposit ETH

- Send ETH to the contract or call deposit().

- Your ETH amount is recorded in a balance mapping.

2. Withdraw ETH

- Call withdraw().

- The contract sends your full balance back to you securely.

3. Check Balances

- getMyBalance() → Returns your personal vault balance.

- totalVaultBalance() → Returns the total ETH in the vault.

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## 🧩 Smart Contract Code

```solidity

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

contract SavingsVault {

mapping(address => uint256) private balances;

bool private locked;

event Deposit(address indexed who, uint256 amount);

event Withdrawal(address indexed who, uint256 amount);

modifier nonReentrant() {

require(!locked, "Reentrant");

locked = true;

_;

locked = false;

}

function deposit() external payable {

require(msg.value > 0, "No ETH sent");

balances[msg.sender] += msg.value;

emit Deposit(msg.sender, msg.value);

}

function withdraw() external nonReentrant {

uint256 amt = balances[msg.sender];

require(amt > 0, "Zero balance");

balances[msg.sender] = 0;

(bool ok, ) = payable(msg.sender).call{value: amt}("");

require(ok, "Transfer failed");

emit Withdrawal(msg.sender, amt);

}

function getMyBalance() external view returns (uint256) {

return balances[msg.sender];

}

function totalVaultBalance() external view returns (uint256) {

return address(this).balance;

}

receive() external payable {

require(msg.value > 0, "No ETH sent");

balances[msg.sender] += msg.value;

emit Deposit(msg.sender, msg.value);

}

fallback() external payable {

if (msg.value > 0) {

balances[msg.sender] += msg.value;

emit Deposit(msg.sender, msg.value);

}

}

}