题解 | #牛牛学说话之-浮点数#
牛牛学说话之-浮点数
https://www.nowcoder.com/practice/7c3bf58fac1a4eb69fa32c2d2c379bac
var readline = require("readline");
//导入模块
var rl = readline.createInterface(process.stdin, process.stdout);
//定义接口
rl.question("", (n) => {
console.log(Number(n).toFixed(3)); //四舍五入为指定小数位数的数字。
rl.close();
});