LOTTERY SYSTEM

Loteery system with ethereum

FUNCTIONALITY PROVIDED

* In the constructor the owner of the contract sends a SHa3 hash of the winning guess between 1 and 1'000'000 - 
* In order to participate a user sends 1 ETH to the contract and gets 1 participation token.  
* If the user sends more than 1 ETH the get 1 token per ETH sent  
* If the user sends a fraction of ETH, the excess is returned to them  
* The contract has a 'makeGuess' function which accepts a number between 1 and 1’000'000 
* When makeGuess is called one token is deducted from the user's balance  
* The call to makeGuess fails if the user has insufficient balance 
* The contract has a closeGame function that can only be called by the owner 
* Calling the closeGame makes it impossible to send ETH to the contract or call makeGuess  
* A function winnerAddress will return the address of the winner once the game is closed  
* Once the game is closed the winner can call getPrice to collect 50% of the ETH in the contract  
* The getPrice function sends the remaining 50% of ETH to the owner of the contract

OPENING APP ON WEB

Then open etherum_remix

Paste the code

Compile the code

Select enviroment as javascript VM in run section

create a user as owner after that add users

use different functions mentioned