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studentData.sol

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

contract StudentData {
    struct Student {
        uint256 id;
        string name;
        uint256 age;
        string major;
    }

    Student[] public students;

    event StudentAdded(uint256 id, string name, uint256 age, string major);

    // Fallback function to accept ether
    receive() external payable {}

    function addStudent(uint256 _id, string memory _name, uint256 _age, string memory _major) public {
        Student memory newStudent = Student(_id, _name, _age, _major);
        students.push(newStudent);
        emit StudentAdded(_id, _name, _age, _major);
    }

    function getStudentCount() public view returns (uint256) {
        return students.length;
    }

    function getStudent(uint256 _index) public view returns (uint256 id, string memory name, uint256 age, string memory major) {
        require(_index < students.length, "Student does not exist");
        Student storage student = students[_index];
        id = student.id;
        name = student.name;
        age = student.age;
        major = student.major;
    }
}