bhflm

pragma solidity ^0.4.25;

contract Ejemplo3{
    
    mapping(uint256 => Alumno) alumnos;

    struct Alumno {
        string nombre;
        uint256 grupo;
    }

bhflm

pragma solidity ^0.4.25;

contract Ejemplo3{
    
    mapping(uint256 => Alumno) alumnos;

    struct Alumno {
        string nombre;
        uint256 grupo;
    }

bhflm

pragma solidity ^0.4.25;

import "./ERC20.sol";  

contract Token is ERC20 {

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;
    uint256 public totalSupply;
    

bhflm

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."

bhflm

pragma solidity ^0.4.25;

contract Ejemplo1{
    
    uint256 notaFinal;
    
    constructor(){}
    
    function calcularNotaFinal(uint256 notaContenido, uint256 notaGrupal, uint256 notaIndividual) public{
        notaFinal =  ((notaContenido*70) + (notaGrupal * 20) + (notaIndividual * 10))/100;

bhflm

pragma solidity ^0.4.25;

contract Ejemplo1{
    
    uint256 notaFinal;
    
    constructor(){}
    
    function calcularNotaFinal(uint256 notaContenido, uint256 notaGrupal, uint256 notaIndividual) public{
        notaFinal =  ((notaContenido*70) + (notaGrupal * 20) + (notaIndividual * 10))/100;