MyFirstContract.sol

pragma solidity ^0.8.11;

//pragma solidity >=0.6.0 <0.8.0;

/*line 1
line 2 */

contract MyFirstContract{
/*
    int a;
    int b=5;

    uint x=10;
    
    string Str="Wagmi";

    bool condition;

    address receiver="0x3a0a36C16136D0EEF403B049917b98DBac3F4463";

    bytes abc;

    uint arr[];
    arr=[1,2,3,4];
    uint arr1[5];
    uint arr2[5]=[1,2,3,4,5];
    arr2[3]//4

    arr2.length
    arr.push[55]

    mapping(string => address) keypair;
    enum jeansSize {S, M, L, XL, 10XL};
    jeansSize.S
    */

    uint x=50; // state variables
    uint y=6;

    uint[] arr;
    uint[3] arr1=[1,2,3];

    function myAddition() external view returns(uint){
        uint insideFunction = 10; // local variables
        return x+y;

        // global variable (no example here)
    }
    /* three type of variables
    1. state
    2. local
    3. global */

    // 0xd9145CCE52D386f254917e481eB44e9943F39138
    // 0xd8b934580fcE35a11B58C6D73aDeE468a2833fa8
    // 0xf8e81D47203A594245E36C48e151709F0C19fBe8
    // 0xD7ACd2a9FD159E69Bb102A1ca21C9a3e3A5F771B
}