pragma solidity^0.4.0;


//Create a contract named DogContract
contract DogContract{
    //Create a struct named Dog with a string name
    //and an unassigned integer age.
    struct Dog {
        string name;
        uint age;
    }
    //Dog is it is a struct and thus can be called as an array,
    //The Dog Array is named dogs.
    Dog[] dogs;

    // Keep Track of the owner by using a mapping structure to have key point to an
    //unassigned integer for the index position in the array.
    mapping(address => uint) ownerToDog;


    //Setter function to add a dog. The input parameters are with a string name
    //and an unassigned integer age
    function addDog(string _name, uint _age){

        //create owner variable of type address equat to the transactor.
        address owner = msg.sender;

        // Push input for the transactor into the dogs array.
        //This will return the id of the dog in the list (returns the index possition in the array)
        // therefore we stroe it as an unsigned integer named id
        uint id = dogs.push(Dog(_name, _age));


        ownerToDog[owner]=id;
    }
    function getDog() returns (string){
        address owner = msg.sender;
        uint id = ownerToDog[owner];
        return dogs[id - 1].name;
    }
}