Ethereum By Example

This contract is for tangible and intangible property such as Cars, Houses or Patents. Can be used to record and verify property rights. First,  payable  is a modifier that can be added to a function. It's impossible to have  payable()  as a function name as it is a reserved keyword. You may use  payable  only in addition to existing functions  Second,  Payable  allows a function to receive ether while being called as stated in  docs .It's manadatory from solidity 0.4.x. If you try to send ether using  call pragma solidity ^0.4.18; contract LandAresh { address public owner; uint public defaultCost; uint public mainLandCost; mapping(uint => mapping(uint => address))public properties; mapping(uint => mapping(uint => address))public landContent; mapping(uint => mapping(uint => bool))public status; mapping(uint => mapping(uint => uint))public prices; funct...