Blockchain analysis

The above diagram shows their respective roles: the contract runs on the node, and the client accesses it.
When testing, also write assertions and test cases, using solidity as programming.
Example of online IDE (remix.ethereum.org)
: browser/GreetMeeting.sol

pargma solidity^0.4.19;
contract GreetMeeting {
   
    
    
	string name;
	function GreetMeeting(string _name) public {
   
    
    
		name = _na