Basic.sol

// SPDX-License-Identifier: MIT
pragma solidity >=0.4.22 <0.9.0; 


contract Basic {


//  General vars

    uint public someNonSigned = 66;
    int private txtAmt = 55000;
    string internal coinName = "STEVE COIN";
    bool isThisValid = true;

    // private can only be called FROM the contract
    // internal can only be called from BY the contract AND other contracts within it
    // external can only be called from a function

//  General vars
    uint public blockTime = block.timestamp;
    address public sender = msg.sender;

// Arrays
    string[] public tokenNames = ["Chainlink", "Ehereum", "Bitcoin", "Dodege"];
    uint[5] public levels = [1,2,3,4,5];

// DateTime

    uint public timeSeconds = 1 seconds;
    uint public timeMinutes = 1 minutes;
    uint public timeHours   = 1 hours;
    uint public timeDays    = 1 days;
    uint public timeWeeks   = 1 weeks;


    struct User {
        string name;
        bool hasTraded;
        int yearsTraded;
        address userAddress;
    }

// store the struct in Array
    User[] public user;

//  Mappings
    mapping(string => string) accountNameMap;

    mapping(address => mapping(string => User)) public someUserInfo;


    enum trustLevel{HIGH, MEDIUM, LOW}
    trustLevel rank;
    trustLevel public defaultTrustLevel = trustLevel.MEDIUM;
/// @notice Explain to an end user what this does
/// @dev Explain to a developer any extra details
/// @return Documents the return variables of a contract’s function state variable
/// @inheritdoc	Copies all missing tags from the base function (must be followed by the contract name) 

}