63 lines
1.2 KiB
Solidity
63 lines
1.2 KiB
Solidity
// SPDX-License-Identifier: GPL-3.0
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pragma solidity >=0.8.2 <0.9.0;
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contract SimpleStorage {
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uint storedData;
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function set(uint x) public {
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storedData = x;
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}
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function get() public view returns (uint) {
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return storedData;
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}
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function get_private() public view returns (uint) {
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return not_get();
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}
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function not_get() private view returns (uint) {
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return storedData;
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}
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}
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contract StorageExtended {
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address private owner;
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event OwnerSet(address indexed oldOwner, address indexed newOwner);
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modifier isOwner() {
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require(msg.sender == owner, "Caller is not owner");
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_;
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}
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// SPoF
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constructor() {
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owner = msg.sender;
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emit OwnerSet(address(0), owner);
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}
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function changeOwner(address newOwner) public isOwner {
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emit OwnerSet(owner, newOwner);
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owner = newOwner;
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}
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function getOwner() external view returns (address) {
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return owner;
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}
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uint256 number;
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function store(uint256 num) public {
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number = num;
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}
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function retrieve() public view returns (uint256){
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return number;
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}
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}
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