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GuardaLoteria.sol

pragma solidity ^0.4.0;

contract GuardaLoteria {
   
   uint numeroSorteado;
   
    
    function set(uint enviado) public{
        numeroSorteado = enviado;
    
    }
    
    function get() public view returns (uint) {
        return numeroSorteado;
    }
}

helloWorld.sol

pragma solidity ^0.5.2;

/**
 * The contractName contract does this and that...
 */
contract HelloWorld {
  
  string public text;//defeiniu uma string como send publica de acesso global
  uint public number;

  function setText (string memory myText) public {
	
	   text = myText;
   }
   
   function setNumber (uint myNumber) public {
	
	   number = myNumber;
   }

}