házijavítás

Niki_homework_1.sol

@@ -5,14 +5,16 @@ contract Cakery {
 
     uint256 public cakeportfolio;
     address public admin;
-    uint256 public fixedcosts;
-    uint256 public variablecosts;
+    uint256 private fixedcosts;
+    uint256 private variablecosts;
     uint256 public soldqty;
     uint256 public price;
     uint256 private income;
     string private correct_password;
-    mapping (uint256 => string) internal idToHash;
-    mapping (uint256 => address) internal idToOwner;
+    mapping (uint256 => string) internal mintmessage;
+    mapping (uint256 => address) internal mintaddress;
+    uint256 public mintcount = 0;
+
 
 
     constructor() {
@@ -23,22 +25,47 @@ contract Cakery {
         price = 100;
         income = soldqty * price;
         admin = msg.sender;
+
     }
 
     function showincome () public view returns (uint256) {
         return income;
+
     } 
+
+    function add(uint256 sold, uint cost) public pure returns(uint) {
+        return sold + cost;
+
+    }
     
     function showvariablecost () public view returns (uint256) {
         return variablecosts;
+
     }
     
     function showprice () public view returns (uint256) {
         return price;
+
+    }
+
+    function set_password(string memory _password) external {
+        require(msg.sender == admin);
+        correct_password = _password;
+
     }
 
-    function transfer(uint256 _tokenId, address _toAddress) external {
-        require(msg.sender == idToOwner[_tokenId]);
-        idToOwner[_tokenId] = _toAddress;
+    function mint(string memory _message) external payable {
+        require(msg.value >= price);
+        require(msg.sender == admin);
+        mintcount = mintcount + 1;
+        mintmessage[mintcount] = _message;
+        mintaddress[mintcount] = msg.sender;  
+
+    } 
+          
+    function WhatIsTheHash(uint256 _mintnumber) public view returns (string memory message_, address sender_){
+        return(mintmessage[_mintnumber], mintaddress[_mintnumber]);
+        
+    }
 
-    } }
+}