Integer Overflow and Underflow

I encountered a problem with integer overflow and underflow while subtracting two numbers in Solidity, which caused unexpected results. To address this, I used Solidity version 0.8.0 and above, which has built-in safety checks to prevent such issues. Here's the solution I implemented:

• Use Solidity 0.8.0 or higher, which has built-in checks for overflow and underflow.
• Alternatively, use libraries like OpenZeppelin's SafeMath for earlier versions.

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

contract OverflowExample {
    function safeSubtract(uint256 a, uint256 b) public pure returns (uint256) {
        require(a >= b, "Underflow detected");
        return a - b;
    }
}

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