console.log("我是one.js");
exports.x="我是one.jshhh";
exports.add=function(x,y){
    return x+y;
    
};
exports.b=function(x,y){
    return x*y;
    
};
var b=require("./two.js");
switch(b.a){
    case 1:
    console.log("加")
    break;
    case 2:
    console.log("减")
    break;
    case 3:
    console.log("乘")
    break;
    case 4:
    console.log(除)
    break;
}