main.js

//------------------- Assignment 1 -------------------

function sayHello(theName, theGender) {
  // Your Code Here
  console.log(
    `Hello ${
      theGender === "Male" ? "Mr " : theGender === "Female" ? "Miss " : ""
    }${theName}`
  );
}

// Needed Output
sayHello("Osama", "Male"); // "Hello Mr Osama"
sayHello("Eman", "Female"); // "Hello Miss Eman"
sayHello("Sameh"); // "Hello Sameh"

console.log("");

//------------------- Assignment 2 -------------------

function calculate(firstNum, secondNum, operation) {
  // Your Code Here
  if (secondNum === undefined) console.log("Second Number Not Found");
  else if (operation === undefined || operation === "add")
    console.log(firstNum + secondNum);
  else if (operation === "subtract") console.log(firstNum - secondNum);
  else if (operation === "multiply") console.log(firstNum * secondNum);
}

// Needed Output
calculate(20); // Second Number Not Found
calculate(20, 30); // 50
calculate(20, 30, "add"); // 50
calculate(20, 30, "subtract"); // -10
calculate(20, 30, "multiply"); // 600

console.log("");

//------------------- Assignment 3 -------------------

function ageInTime(theAge) {
  // Your Code Here
  if (theAge > 10 && theAge < 100) {
    console.log(`Months => ${12 * theAge} Months`);
    console.log(`Days => ${365 * theAge} Days`);
    console.log(`Hours => ${365 * theAge * 24} Hours`);
    console.log(`Minutes => ${365 * theAge * 24 * 60} Minutes`);
    console.log(`Seconds => ${365 * theAge * 24 * 60 * 60} Seconds`);
  } else {
    console.log("Age Out Of Range");
  }
}

// Needed Output
ageInTime(110); // Age Out Of Range
ageInTime(38); // Months Example => 456 Months

console.log("");

//------------------- Assignment 4 -------------------

function checkStatus(a, b, c) {
  let arr = [a, b, c];
  for (let i = 0; i < arr.length; i++) {
    if (typeof arr[i] === "string") a = arr[i];
    else if (typeof arr[i] === "number") b = arr[i];
    else if (typeof arr[i] === "boolean") c = arr[i];
  }
  console.log(
    `"Hello ${a}, Your Age Is ${b}, You Are ${
      c ? "Available" : "Not Available"
    } For Hire"`
  );
}

// Needed Output
checkStatus("Osama", 38, true); // "Hello Osama, Your Age Is 38, You Are Available For Hire"
checkStatus(38, "Osama", true); // "Hello Osama, Your Age Is 38, You Are Available For Hire"
checkStatus(true, 38, "Osama"); // "Hello Osama, Your Age Is 38, You Are Available For Hire"
checkStatus(false, "Osama", 38); // "Hello Osama, Your Age Is 38, You Are Not Available For Hire"

console.log("");

//------------------- Assignment 5 -------------------

function createSelectBox(startYear, endYear) {
  // Your Code Here
  document.write("<select>");
  for (let i = startYear; i <= endYear; i++) {
    document.write(`<option value="${i}">${i}</option>`);
  }
  document.write("</select>");
}
createSelectBox(2000, 2021);

//------------------- Assignment 6 -------------------

function multiply(...numbers) {
  let result = 1;
  for (let i = 0; i < numbers.length; i++) {
    if (typeof numbers[i] === "number") {
      result *= parseInt(numbers[i]);
    }
  }
  console.log(result);
}

multiply(10, 20); // 200
multiply("A", 10, 30); // 300
multiply(100.5, 10, "B"); // 1000