OOP · medium

23. Abstract contracts & interfaces

Define contracts to implement.

Define `interface IGreeter { function greet() external view returns (string memory); }` and `contract Hi is IGreeter` returning `"hi"`.

Required in your answer: interface IGreetercontract Hi is IGreeteroverride returns (string memory)

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

// TODO interface IGreeter
// TODO contract Hi is IGreeter

Output appears here.