Solidity-Beginner/20.sol at master · MainakRepositor/Solidity-Beginner · GitHub

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// SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;

contract SecretVault{
    string private secret;

    constructor (string memory _secret) {
        secret = _secret;
    }

    function setSecret (string memory _secret) external {
        secret = _secret;
    }

    function getSecret () external view returns (string memory)
    {
        return secret;
    }
}

contract myContract{
    SecretVault public secretVault;

    constructor(SecretVault _secretVault){
        secretVault = _secretVault;
    }

    function setSecret(string memory _secret) public {
        secretVault.setSecret(_secret);
    }

    function getSecret() public view returns(string memory){
        return secretVault.getSecret();
    }

}