我尝试编写这个 node.js 计算器代码有一段时间了

Question

我正在尝试在 node.js 上编写一个基本的文本功能计算器，它将提出问题并使用答案来生成解决方案。例如，它应该要求第一个数字，然后是第二个数字的操作，最后显示你的结果是..有人可以帮我开发这个代码的基础吗？我有点迷茫。

Answer 1

听起来您正在尝试创建一个交互式计算器。

所以你会想要这样的伪代码：

while equals_not_requested {
  ask for numbers
  ask for operations
}

您需要使用 while 循环，因为它会循环直到请求等于运算符。同时，您的循环循环并不断请求数字和运算符。

我认为最好的方法是将您的数字和运算符放入一个数组中，然后您可以将整个数组传送到一个 'do math' 函数中。

Answer 2

认为您需要与控制台互动

这是示例，它会对您有所帮助。

const readline = require("readline");
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

rl.question("What is your name ? ", function(name) {
        rl.question("Where do you live ? ", function(country) {
        console.log(`${name}, is a citizen of ${country}`);
      rl.close();
   });
});

rl.on("close", function() {
    console.log("\nBYE BYE !!!");
    process.exit(0);
});

作为下一步，您需要编写普通的数学函数然后调用它们。

用 Sum 函数更新

// This is required and it's part of node.js api
const readline = require("readline");
const rl = readline.createInterface({
   input: process.stdin,
   output: process.stdout
 });
// Here we interact with user and ask left side digit
rl.question("Please provide left side digt ", function(leftSide) {
// After user presented digit we're asing for right side
rl.question("Now right side ", function(rightSide) {
// So we have two digits it's time to sum:
/* we're converting  first and second inputs
   and plusing them
*/
   // as output we're getting seft + right in same way we can times,  devide etc
    console.log(`Sum result is ${Number(leftSide) + Number(rightSide)}`);
    rl.close();
  });
});

// As you see we can call different functions during operation.
rl.on("close", function() {
console.log("\nBYE BYE !!!");
process.exit(0);
});

我尝试编写这个 node.js 计算器代码有一段时间了

I have attempted to write this node.js calculator code for a while

calculator

node.js

用 Sum 函数更新