ej 2

gistfile1.txt

pragma solidity ^0.4.25;

contract owned {
    constructor() public { owner = msg.sender; }
    address owner;

    modifier onlyOwner {
        require(
            msg.sender == owner,
            "Only owner can call this function."
        );
        _;
    }
}

contract Ejemplo2 is owned{
    
    address owner;
    
    mapping(uint256 => Alumno) alumnos;
    
    struct Alumno {
        uint256 notaIndividual;
        uint256 notaContenido;
        uint256 notaGrupal;
    }

    
    constructor (){
        owner = msg.sender;
    }
    
    function calificar(uint256 padron, uint256 notaContenido, uint256 notaGrupal, uint256 notaIndividual) public onlyOwner{
        alumnos[padron].notaIndividual = notaIndividual;
        alumnos[padron].notaContenido = notaContenido;
        alumnos[padron].notaGrupal = notaGrupal;
        emit Calificacion(padron, notaContenido, notaGrupal, notaIndividual);
    }
    
    function obtenerNotas(uint256 padron)public view returns(uint256 notaIndividual, uint256 notaContenido, uint256 notaGrupal, uint256 notaFinal){
        notaIndividual = alumnos[padron].notaIndividual;
        notaContenido = alumnos[padron].notaContenido;
        notaGrupal = alumnos[padron].notaGrupal;
        notaFinal = calcularNotaFinal(notaIndividual, notaContenido, notaGrupal);
    }
    
    function calcularNotaFinal(uint256 notaIndividual, uint256 notaContenido, uint256 notaGrupal)private pure returns(uint256){
        return ((notaContenido*70) + (notaGrupal * 20) + (notaIndividual * 10))/100;
    }
    
    event Calificacion(uint256 padron, uint256 notaContenido, uint256 notaGrupal, uint256 notaIndividual);
}

[
	{
		"constant": false,
		"inputs": [
			{
				"name": "padron",
				"type": "uint256"
			},
			{
				"name": "notaContenido",
				"type": "uint256"
			},
			{
				"name": "notaGrupal",
				"type": "uint256"
			},
			{
				"name": "notaIndividual",
				"type": "uint256"
			}
		],
		"name": "calificar",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "constructor"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": false,
				"name": "padron",
				"type": "uint256"
			},
			{
				"indexed": false,
				"name": "notaContenido",
				"type": "uint256"
			},
			{
				"indexed": false,
				"name": "notaGrupal",
				"type": "uint256"
			},
			{
				"indexed": false,
				"name": "notaIndividual",
				"type": "uint256"
			}
		],
		"name": "Calificacion",
		"type": "event"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "padron",
				"type": "uint256"
			}
		],
		"name": "obtenerNotas",
		"outputs": [
			{
				"name": "notaIndividual",
				"type": "uint256"
			},
			{
				"name": "notaContenido",
				"type": "uint256"
			},
			{
				"name": "notaGrupal",
				"type": "uint256"
			},
			{
				"name": "notaFinal",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	}
]