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// SPDX-License-Identifier: MIT 
pragma solidity ^0.8.30; 
 
contract Receiver { 
   string public text; 
   uint public x; 
 
   event Received(string message); 
 
   fallback() external payable { 

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//SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract hello {
    // if-else
    function demoif(unit x) external pure returns(uint){
        if (x < 100){
            //code
            return 1;
        } else if (x < 200){

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//SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract array{
    uint[] public arr;
    uint[] public arr2 = [1,2,3];
    uint[5] public fixarr; //[0,0,0,0,0]

    function get(uint i) public view returns(uint){
        return arr2[i];

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