Write a menu-driven program in Java to check whether a number is a 3 digit number
Answers
Answer:
Computer Applications
Write a menu driven class to accept a number from the user and check whether it is a Palindrome or a Perfect number.
(a) Palindrome number: (A number is a Palindrome which when read in reverse order is same as in the right order)
Example: 11, 101, 151 etc.
(b) Perfect number: (A number is called Perfect if it is equal to the sum of its factors other than the number itself.)
Example: 6 = 1 + 2 + 3
Java
Java Iterative Stmts
ICSE
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ANSWER
import java.util.Scanner;
public class KboatPalinOrPerfect
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("1. Palindrome number");
System.out.println("2. Perfect number");
System.out.print("Enter your choice: ");
int choice = in.nextInt();
System.out.print("Enter number: ");
int num = in.nextInt();
switch (choice) {
case 1:
int copyNum = num;
int revNum = 0;
while(copyNum != 0) {
int digit = copyNum % 10;
copyNum /= 10;
revNum = revNum * 10 + digit;
}
if (revNum == num)
System.out.println(num + " is palindrome");
else
System.out.println(num + " is not palindrome");
break;
case 2:
int sum = 0;
for (int i = 1; i <= num / 2; i++) {
if (num % i == 0) {
sum += i;
}
}
if (num == sum)
System.out.println(num + " is a perfect number");
else
System.out.println(num + " is not a perfect number");
break;
default:
System.out.println("Incorrect Choice");
break;
}
}
}
OUTPUT
BlueJ output of Write a menu driven class to accept a number from the user and check whether it is a Palindrome or a Perfect number. (a) Palindrome number: (A number is a Palindrome which when read in reverse order is same as in the right order) Example: 11, 101, 151 etc. (b) Perfect number: (A number is called Perfect if it is equal to the sum of its factors other than the number itself.) Example: 6 = 1 + 2 + 3
BlueJ output of Write a menu driven class to accept a number from the user and check whether it is a Palindrome or a Perfect number. (a) Palindrome number: (A number is a Palindrome which when read in reverse order is same as in the right order) Example: 11, 101, 151 etc. (b) Perfect number: (A number is called Perfect if it is equal to the sum of its factors other than the number itself.) Example: 6 = 1 + 2 + 3
Answered By
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RELATED QUESTIONS
Write a menu driven program to perform the following tasks by using Switch case statement:
(a) To print the series:
0, 3, 8, 15, 24, ………… to n terms. (value of 'n' is to be an input by the user)
(b) To find the sum of the series:
S = (1/2) + (3/4) + (5/6) + (7/8) + ……….. + (19/20)
Write a menu driven program to accept a number from the user and check whether it is a Prime number or an Automorphic number.
(a) Prime number: (A number is said to be prime, if it is only divisible by 1 and itself)
Example: 3,5,7,11
(b) Automorphic number: (Automorphic number is the number which is contained in the last digit(s) of its square.)
Example: 25 is an Automorphic number as its square is 625 and 25 is present as the last two digits.
Write a program to input Principal (p), Rate (r) and Time (t). Calculate and display the amount, which is compounded annually for each year by using the formula:
Simple Interest:
(si) = (prt) / 100
p = p + si
[Hint: The amount after each year is the Principal for the next year]
Write a menu driven program to input two positive numbers m and n (where m>n) and perform the following tasks:
(a) Find the sum of two numbers without using '+' operator.
(b) Find the product of two numbers without using '*' operator.
(c) Find the quotient and remainder of two numbers without using '/' and '%' operator.
[Hint: The last value obtained after each subtraction is the remainder and the number of iterations results in quotient.]
Sample Input: m=5, n=2
5 - 2 =3
3 - 2 = 1, thus Quotient = 2 and Remainder = 1