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contracts...Practice.sol

pragma solidity >=0.4.24 <0.5.6;

//NFT 발행, Solidity 기초
contract Practice { //Practice 라는 이름의 contract

    //Storage variable
    uint256 private totalSupply = 10;
    string public name = "KlayLion";
    address public owner; //contract deployer
    mapping (uint256 => string) public tokenURIs; //map

    constructor () public {
        owner = msg.sender; // 생성자
    }

    function  getTotalSupply() public view returns(uint256){
        return totalSupply + 100000;
    } 

    //set value of storage variable 
    function setTotalSupply(uint256 newSupply) public {
        require(owner == msg.sender, 'Not owner'); //조건
        totalSupply = newSupply;
    }

    function setTokenUri(uint256 id, string memory uri) public {
        tokenURIs[id] = uri;
    }

}