day3.js

// Task 1---> number is +ve,0 or -ve
let num = -5;
if (num > 0)
    console.log(num + " is positive");
else if (num === 0)
    console.log(num + " is zero")
else
    console.log(num + " is negative");

// Task2----> Voting eligibility
let age = 17;
if (age >= 18)
    console.log("person is eligible to vote");
else
    console.log("person is NOT eligible to vote");

// Task 3----> largest out of 3 numbers
let num1 = 34;
let num2 = 34;
let num3 = 30;
if (num1 >= num2) {
    if (num1 >= num3)
        console.log(num1 + " is largest");
    else // num1<num3
        console.log(num3 + " is largest");
}
else // num2>num1
{
    if (num2 >= num3)
        console.log(num2 + " is largest");
    else // num2<num3
        console.log(num3 + " is largest");
}

// Task 4----> tell day of week based on day no(1-7)
let day = 5;
switch (day) {
    case 1:
        console.log("SUNDAY");
        break;
    case 2:
        console.log("MONDAY");
        break;
    case 3:
        console.log("TUESDAY");
        break;
    case 4:
        console.log("WEDNESDAY");
        break;
    case 5:
        console.log("THURSDAY");
        break;
    case 6:
        console.log("FRIDAY");
        break;
    case 7:
        console.log("SATURDAY");
        break;
    default:
        console.log("INVALID DAY");
}

//Task 5----> grading using switch-case
let score = 45;
switch (Math.floor(score / 10)) {
    case 10:
    case 9:
        console.log('A');
        break;
    case 8:
        console.log('B');
        break;
    case 7:
        console.log('C');
        break;
    case 6:
        console.log('D');
        break;
    case 5:
        console.log('E');
        break;
    default:
        console.log('F');
}

//Task 6----> odd or even number using ternary operator
let n = 5;
let result = n % 2 == 0 ? n + " is even" : n + " is odd";
console.log(result);

//Task 7----> yr is leap yr or not
let yr = 1900;
if (yr % 4 == 0 && (yr % 100 != 0 || yr % 400 == 0)) {
    console.log(yr + " is a leap year");
}
else {
    console.log(yr + " is not a leap year");
}