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Calculator.sol

pragma solidity 0.4.24;

contract Calculator {
    int result = 0;

    constructor() public { }
    
    function getResult() public view returns (int)
    {
        return result;
    }

    function addition(int x, int y) public {
        result = x + y;
    }

    function sub(int x, int y) public {
        result = x - y;
    }

    function mult(int x, int y) public {
        result = x * y;
    }

    function div(int x, int y) public {
        result = x / y;
    }

}