studentinfo.sol

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
    ///@author Faith M. Roberts
    ///@title Student Records
contract Records{
    address public admin_address;

    struct StudentsInfo{
        string name;
        uint8 age;
        string gender;
    }

    mapping(string => StudentsInfo) info;

    uint public studentCount;

    constructor(address admin){
        admin_address = admin;

        studentCount = 0;
    }

    function store_details (string memory name, uint8 age, string memory gender) external{
        StudentsInfo memory _newStudent = StudentsInfo(name,age,gender);
        info[name] = _newStudent;
        studentCount++;
    }

    function getName(uint _studentId) public view returns(StudentsInfo memory){
    return info[_studentId];
    } 

    function getNames() public view returns(StudentsInfo[] memory){
      StudentsInfo[]    memory id = new StudentsInfo[](studentCount);
      for (uint i = 0; i < studentCount; i++) {
          StudentsInfo storage student = info[i];
          id[i] = student;
      }
      return id;
  }
}