script.js

//Question 1

function calculateBMI(weight, height) {
  const bmi = weight / (height * height);

  if (bmi < 18.5) {
    return `BMI: ${bmi.toFixed(1)} - Underweight`; //bmi.toFixed(1) rounds the number to one decimal place
  } else if (bmi >= 18.5 && bmi <= 24.9) {
    return `BMI: ${bmi.toFixed(1)} - Normal weight`;
  } else if (bmi >= 25 && bmi <= 29.9) {
    return `BMI: ${bmi.toFixed(1)} - Overweight`;
  } else {
    return `BMI: ${bmi.toFixed(1)} - Obese`;
  }
}


// Using same height for testing purpose
console.log(calculateBMI(50, 1.7));  // Underweight
console.log(calculateBMI(65, 1.7));  // Normal weight
console.log(calculateBMI(80, 1.7));  // Overweight
console.log(calculateBMI(95, 1.7));  // Obese



// Question 2 

function checkSeason(month) {
  month = month.toLowerCase(); // Converts months to lower case

  if (month === "september" || month === "october" || month === "november") {
    return "Autumn";
  } 
  else if (month === "december" || month === "january" || month === "february") {
    return "Winter";
  } 
  else if (month === "march" || month === "april" || month === "may") {
    return "Spring";
  } 
  else if (month === "june" || month === "july" || month === "august") {
    return "Summer";
  } 
  else {
    return "Invalid month";
  }
}


console.log(checkSeason("february"));   // Winter
console.log(checkSeason("august"));    // Summer
console.log(checkSeason("October"));   // Autumn
console.log(checkSeason("May"));       // Spring

// Question 3

// With Math.max

// Finding the bigger number

function findMax(a, b, c) {
  return Math.max(a, b, c);
}


console.log(findMax(0, 10, 5));     // 10
console.log(findMax(0, -10, -2));   // 0


//Without Math.max

function findMax(a, b, c) {
  let max = a;

  if (b > max) {
    max = b;
  }

  if (c > max) {
    max = c;
  }

  return max;
}


console.log(findMax(0, 10, 5));     // 10
console.log(findMax(0, -10, -2));   // 0


// Question 4

function printArray(arr) {
  for (let i = 0; i < arr.length; i++) {
    console.log(arr[i]);
  }
}

printArray([1, 2, 3, 4]);


// Question 5

function showDateTime() {
  const now = new Date();

  let day = now.getDate();
  let month = now.getMonth() + 1; // months start from 0
  let year = now.getFullYear(); // e.g 2026

  let hours = now.getHours();
  let minutes = now.getMinutes();

  // add 0 in front if number is 1 digit
  if (day < 10) day = "0" + day; // if day is 5 it becomes 05, 2 becomes 02 and so on 
  if (month < 10) month = "0" + month; // above comment in line 114 for line 115-117
  if (hours < 10) hours = "0" + hours;
  if (minutes < 10) minutes = "0" + minutes;

  return `${day}/${month}/${year} ${hours}:${minutes}`;
}

console.log(showDateTime());


// Question 5

function printArray(arr) {
  for (let i = 0; i < arr.length; i++) {
    console.log(arr[i]);
  }
}

printArray([1, 2, 3, 4]);