Update wallet.sol

Level1/Wallet/wallet.sol

@@ -2,29 +2,34 @@
 pragma solidity >=0.5.0 <0.9.0;
 
 contract Wallet {
-    address payable[] public accounts;
     //creating an array of accounts
-    address payable public owner;
+    address payable[] public accounts;
+
     //owner's address
+    address payable public owner;
 
     constructor(address _owner){
-        owner = payable(_owner);
         //making owners address as payable
-        accounts.push(payable(owner));
+        owner = payable(_owner);
+
         //pushing owner address in accounts array
+        accounts.push(payable(owner));
     }
 
+    // To deposit balance to the smart contract
     function deposit() public payable {
+        require(msg.value > 0, "Cannot deposit zero value");
+        accounts.push(payable(msg.sender));
     }
-    //to deposit balance to the smart contract
-
+
+    // Sending a specific 'amount' to the 'receiver'
     function sendEther(address reciever, uint amount) public payable{
         require(msg.sender== owner,"sender is not allowed");
         payable(reciever).transfer(amount);
     }
 
+    // checking balance
     function balanceOf()  public view returns(uint){
         return address(this).balance;
-    }
-    //checking balance
+    } 
 }