Contract

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

contract ControlStructures {
error AfterHours(uint256 time);
error AtLunch();

function fizzBuzz(uint256 _number) public pure returns (string memory response) {
if (_number % 3 == 0 && _number % 5 == 0) {
return "FizzBuzz";
} else if (_number % 3 == 0) {
return "Fizz";
} else if (_number % 5 == 0) {
return "Buzz";
} else {
return "Splat";
}
}

function doNotDisturb(uint256 _time) public pure returns (string memory result) {
assert(_time < 2400);

if (_time > 2200 || _time < 800) {
revert AfterHours(_time);
} else if (_time >= 1200 && _time <= 1299) {
revert("At lunch!");
} else if (_time >= 800 && _time <= 1199) {
return "Morning!";
} else if (_time >= 1300 && _time <= 1799) {
return "Afternoon!";
} else if (_time >= 1800 && _time <= 2200) {
return "Evening!";
}
}
}