Viewandpure.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;
contract ViewandPureFunctions
{
    uint public number1; //this is a state variable
    function Viewfunction() external view returns(uint) // this is a view function so it 
    //can read state variable
    {
        return number1;
    } 
    function Purefunction() external pure returns(uint) // this is a pure function so it cannot read state variable
    {
        return 100;
    }
    function addtoNumber1(uint number2) external view returns (uint) 
    {
        return number1 + number2;
    } 
    function add(uint num1,uint num2) external pure returns(uint)
    {
        return num1+num2;
    }
}