conditional statement and loops.js

var userAge=19;
var isCitizen=true;
var isRegistered=true;
if(userAge>=18){
if(isCitizen){
if(isRegistered){
console.log("You're Eligible to vote");
}
else{
    console.log("You're not eligible due to Registration status ");  
}
}
else{
    console.log("You're not eligible due to citizen status ");
    
}
}
else{
   console.log("You're not eligible due to Age limit(Younger)");
    
}
//!Write a program to check if number is even or odd
var num="6";
if(num%2===0)
    console.log("even");
    else
    console.log("Odd");
//! Example for switch statement
var day="Tuesday";
switch(day){
    case "Monday":console.log("Aaj Buck Karte hai");
    break;
    case "Tuesday":console.log("Aaj Sonya chayega + Lunch mei nimoona chawal");
    break;
    case"saturday":console.log("Bhai shots maar Full mobile use ");
    break;
    case "sunday":console.log("break bhai");
    break;
    default:console.log("Dal mei Kuch Kala Hai");    
}
//! Example for switch statement
var a=5;
var b=10;
var r=4;
var ar;
var shape="square";
switch(shape){
    case "Circle":ar=(3.14)*r*r;
    console.log("Circle"+ar);
    break;
    case"rectangle":ar=a*b;
    console.log("rectangle:"+ar);
    break;
    case"square":ar=a*a;
    console.log("Square:"+ar);
    break;
    default:
        console.log("Choose Wrong input");   
}
//!Examples for loop(debugging example work in console)
// var num=5;
// debugger;
// while(num>0){
//    console.log(num);
//      num--;
// }
//!Do-while loop
num=7;
do{
    console.log(num);
    num--;
}while(num>0);
//!validity example(run in console)
// var userInput;
// var positiveNumber;
// do{
//     userInput= prompt("Enter any positive number");
//     positiveNumber=parseFloat(userInput); 
// }while(isNaN(positiveNumber)||positiveNumber<0);
// console.log("You entered a valid positive number:",positiveNumber);

//Table Example
var a=15;
var b=1;
while(b<=10){
    // console.log(a+" * "+b+" = "+a*b);
    console.log(`${a} * ${b} = ${a*b}`);
    b++;
    }
    //For validating number we use do while loop
   //! for(;;){} and while(true){} are same
   //!Use case:Game Development:a infinite loop is use for
   //!continuous update and render game frame until specific condition
   //!(e.g., game over) is met.
   // network(wifi)show in game happen due to loop

    //For Prime 
    var num=13;
    var isPrime=true;
    for(var i=2;i<num;i++){
        if(num%i===0){
            isPrime=false;
            break;
        }
    }
    if(isPrime){
        console.log("Number is Prime");
    }
    else{
        console.log("Number is Not Prime");
        }
        //leap year program
        var year=2020;
        if((year%4===0 && year%100!=0)|| year%400==0)
            console.log("This year is leap year");
        else{
            console.log("This is not a leap year");  
        }
    //pattern Printing
    //!string consider space as value never mislead
    for(var i=1;i<=5;i++){
        pattern="";
        for(var j=1;j<=i;j++){
            pattern+=" *";
             }
             console.log(pattern);
             
    }