complete solidity task

simplebank.sol

@@ -2,56 +2,38 @@
 pragma solidity ^0.8.0;
 
 contract SimpleBank {
-    // TODO: Declare a public variable 'owner' of type address
-    address public ____;
+    address public owner;
+    mapping(address => uint) public balances;
 
-    // TODO: Create a mapping 'balances' that maps address to uint
-    mapping(address => ____) public ____;
-
-    // Modifier to allow only owner to access certain functions
     modifier onlyOwner() {
-        // TODO: Require that msg.sender is the owner
-        require(msg.sender == ____, "Not the owner");
+        require(msg.sender == owner, "Not the owner");
         _;
     }
 
-    // TODO: Create a constructor that sets the msg.sender as owner
     constructor() {
-        ____ = msg.sender;
+        owner = msg.sender;
     }
 
-    // Function to deposit ether into the contract
     function deposit() public payable {
-        // TODO: Increment the sender's balance with msg.value
-        ____[msg.sender] += ____;
+        balances[msg.sender] += msg.value;
     }
 
-    // Function to check balance
     function getBalance() public view returns (uint) {
-        // TODO: Return the balance of the sender
-        return ____[msg.sender];
+        return balances[msg.sender];
     }
 
-    // Function to withdraw amount
     function withdraw(uint amount) public {
-        // TODO: Check if sender has enough balance
-        require(____[msg.sender] >= amount, "Insufficient balance");
-
-        // TODO: Deduct the amount from sender's balance
-        ____[msg.sender] -= amount;
-
-        // TODO: Transfer the amount to sender
-        payable(msg.sender).transfer(____);
+        require(balances[msg.sender] >= amount, "Insufficient balance");
+        balances[msg.sender] -= amount;
+        payable(msg.sender).transfer(amount);
     }
 
-    // Owner-only function to check contract's total balance
     function contractBalance() public view onlyOwner returns (uint) {
-        // TODO: Return address(this).balance
-        return ____;
+        return address(this).balance;
     }
 
-    // Fallback function to receive ether
     receive() external payable {
         deposit();
     }
 }
+