使用嵌套循环调用每次迭代（Javascript、node js、readlinesync）

Question

Trying to solve this problem but I do not know how to display each iteration (each of the twelve months) with console.log.

The problem is: Write a program that uses nested loops to collect data and calculate the average rainfall over a period of years. The program should first ask for the number of years. The outer loop will iterate once for each year. The inner loop will iterate twelve times, once for each month. Each iteration of the inner loop will ask the user for the inches of rainfall for that month. After all iterations, the program should display the number of months, the total inches of rainfall, and the average rainfall per month for the entire period.

This is what I have so far:

var readlineSync = require('readline-sync');
var years = readlineSync.questionInt('Enter the number of years: ');

for (i = 0; i < years; i++) {
  for (j = 0; j < 11; j++) {
    var monthlyrainfall = readlineSync.questionInt('How many inches of rainfall was there this month? ');
  }
}

Answer 1

The missing point was how to calculate a sum of values inside a loop. Take a look at this code, the vars totalInchesOfRain and averageRainfallPerMonth will calculate the values.

var readlineSync= require('readline-sync');

var years = readlineSync.questionInt('Enter the number of years: ');

var totalInchesOfRain = 0;
for (i=0; i < years ; i++) {
    for(j=0; j<11; j++){
        var monthlyRainFall = readlineSync.questionInt('How many inches of rainfall was there this month? ');

        totalInchesOfRain += monthlyRainFall;
    }
}

var averageRainfallPerMonth = totalInchesOfRain / (years * 12);