If else , Modulo & Boolean Question | Practice Series 001 | A JAVA JOURNEY BY DIVYANSHU KHARE

 Question 01)) Write a Java program that checks whether a given number is even or odd and prints the result..

Ans: 

package HelloWorld;

import java.util.Scanner;

public class LearningJava {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

int a = scan.nextInt();

if (a % 2 == 0){

System.out.print("Even");

}

else {

System.out.print("Odd");

}

}

}

Let me Explain: Yahan humne Scanner ka istemal kiya hai jisse user se input liya ja sake. Fir humne ek integer variable a mein input liya. Uske baad if-else statement ka istemal kiya hai. Yadi a ko 2 se divide karke remainder 0 aata hai, tab woh even hai, aur agar remainder kuch aur hota hai, tab woh odd hai.

Jab aap koi number enter karenge, code us number ko check karega ki woh even hai ya odd, aur uska result print karega.

This is Question of Modulo % 

Even Number

Odd Number

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Question 02) Create a program that determines if a student is eligible for voting based on their age. The voting age is 18.
Ans:

package HelloWorld;

import java.util.Scanner;

public class LearningJava {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

int age = scan.nextInt();

if (age >= 18) {

System.out.print("You are Eligible For Vote");

}

else {

System.out.print("You are not Eligible for Vote");

}

}

}

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Question 03) Develop a program that takes two integers as input and checks if the first number is divisible by the second number without leaving a remainder.

Ans: 

package HelloWorld;

import java.util.Scanner;

public class LearningJava {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

int first = scan.nextInt();

int second = scan.nextInt();

if (second !=0 && first % second == 0) {

System.out.print(first + " " + "is divisible by" + " " + second + " " + "Without living a reminder");

}

else {

System.out.print(first +" " + "is not divisbile by" + " " + second + " " + "without living a reminder");

}

}

}

 

Iss code mein, humne if statement ka upyog karte hue ek vishesh sthiti ka pata lagaya hai aur uske anusaar alag-alag karyavahi ki hai:

second non-zero hai (first != 0): Sabse pehle humne yeh dekha ki kya doosra number 0 nahi hai. Kyunki 0 se vibhajan karne par kuch samasya ho sakti hai. Phir humne first % second ki jaanch ki hai ki kya first doosre number (second) se bina remainder chhode divide ho sakta hai.

Agar upar di gayi dono shartein sahi hain, toh hum print karte hain ki first second se bina remainder chhode vibhajit kiya jaa sakta hai.

Agar koi bhi shart sach nahi hoti, toh hum else block mein jaate hain aur print karte hain ki fist second se bina remainder chhode vibhajit nahi kiya jaa sakta hai.

Is tarah se aapko pata chal jata hai ki diye gaye do numbers mein pehla number doosre number se bina shesh chhode vibhajit ho sakta hai ya nahi.

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Question  4) Create a program that determines if a person is eligible for senior citizen benefits based on their age. The senior citizen age is 60.

Ans:

package HelloWorld;

import java.util.Scanner;

public class LearningJava {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.print("Enter Your Age");

int age = scan.nextInt();

if (age >= 60) {

System.out.print("Congratulatios! you are eligible for senior citizen benefits");

}

else {

System.out.print("Oho! you are not eligible for senior citizen benefits");

}

}

}