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contracts...SimpleStorage.sol

// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;

contract SimpleStorage {
    uint256 favoriteNumber = 0;
    
    struct People {
        string name;
        uint256 favoriteNumber;
    }
    
    People[] public peoples;
    mapping (string => uint256) public nameToFavoriteNumber;
    
    function store (uint256 newFavNumber) public {
        favoriteNumber = newFavNumber;
    }
    
    function viewFavNumber () public view returns (uint256) {
        return favoriteNumber;
    }
    
    
    function addPerson (string memory name, uint256 favNumber) public {
        peoples.push(People(name, favNumber));
        nameToFavoriteNumber[name] = favNumber;
    }
    
}