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contracts...mapping.sol

//SPDX-License-Identifier: MIT

pragma solidity ^0.8;

struct donate_dts{
    string name;
    uint age;
    string location;
    uint donation; 
}

contract advMapping{

    mapping(uint => string) public emp_id;

    function setIds() public {
        emp_id[10] = "Arslan";
        emp_id[20] = "Ahmad";
        emp_id[14] = "Raza";

    }
    function getId(uint _id) public view returns(string memory){
        return emp_id[_id];
    }

    //advance mapping on key and struct value
    mapping(address => donate_dts) ngo_acc;

    function setDonation(string memory _name,uint _age,string memory _location,uint _donate) public{
       // donate_dts memory dts;
        //dts.name = _name;
        //dts.age = _age;
        //dts.location = _location;
        //dts.donation = ngo_acc[msg.sender].donation + _donate;
        ngo_acc[msg.sender] = donate_dts(_name,_age,_location,ngo_acc[msg.sender].donation + _donate);
    }

    function getDonationDetails(address _addr)public view returns(donate_dts memory){
        return ngo_acc[_addr];
    }

    function deleteRecord(address _addr) public{
        delete ngo_acc[_addr];
    }
}