JSFiddle - React, Tailwind, and code Playground

JavaScript

var readline = require('readline');

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



rl.question('Введите число: ', (num1) => {
    if(num1.trim() === 'EOF'){
        process.exit(0);
    } else {
        let sum = 0;
        sum += parseInt(num1);
        rl.setPrompt('Введите число: ');
        rl.prompt();
        rl.on('line', (num2) =>{
            if(num2.trim() === 'EOF'){
                rl.close();
            } else {
                rl.setPrompt('Введите число: ');
                rl.prompt();
                sum += parseInt(num2);
            }
        });
        rl.on('SIGINT', () =>{
            console.log('\n' + "Сумма равна: " + sum.toString());
            process.exit(0);
      })
    }
});