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qiwihui/HelloWorld.sol

Created April 25, 2022 02:40
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HelloWorld.sol
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HelloWorld.sol
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;
contract HellowWorld {
uint256 number;
function storeNumber(uint256 num) public {
number = num;
}
function retrieveNumber() public view returns (uint256){
return number;
}
}
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