// Program to convert integers into words, Ex5.5
package num2word;
import java.util.Scanner;
public class Main {
// units Method
public static void units(int n) {
switch (n) {
case 1:
System.out.print("one ");
break;
case 2:
System.out.print("two ");
break;
case 3:
System.out.print("three ");
break;
case 4:
System.out.print("four ");
break;
case 5:
System.out.print("five ");
break;
case 6:
System.out.print("six ");
break;
case 7:
System.out.print("seven ");
break;
case 8:
System.out.print("eight ");
break;
case 9:
System.out.print("nine ");
break;
}
}
// special case Method
public static void special(int n) {
switch (n) {
case 11:
System.out.print(" eleven");
break;
case 12:
System.out.print(" twelve");
break;
case 13:
System.out.print(" thirteen");
break;
case 14:
System.out.print(" fourteen");
break;
case 15:
System.out.print(" fifteen");
break;
case 16:
System.out.print(" sixteen");
break;
case 17:
System.out.print(" seventeen");
break;
case 18:
System.out.print(" eighteen");
break;
case 19:
System.out.print(" nineteen");
break;
}
}
// tens Method
public static void tens(int n) {
switch (n) {
case 1:
System.out.print(" ten ");
case 2:
System.out.print(" twenty ");
break;
case 3:
System.out.print(" thirty ");
break;
case 4:
System.out.print(" forty ");
break;
case 5:
System.out.print(" fifty ");
break;
case 6:
System.out.print(" sixty ");
break;
case 7:
System.out.print(" seventy ");
break;
case 8:
System.out.print(" eighty ");
break;
case 9:
System.out.print(" ninety ");
break;
}
}
// hundreds Method
public static void hundreds(int n) {
switch (n) {
case 1:
System.out.print("one hundred ");
break;
case 2:
System.out.print("two hundred ");
break;
case 3:]
System.out.print("three hundred ");
break;
case 4:
System.out.print("four hundred ");
break;
case 5:
System.out.print("five hundred ");
break;
case 6:
System.out.print("six hundred ");
break;
case 7:
System.out.print("seven hundred ");
break;
case 8:
System.out.print("eight hundred ");
break;
case 9:
System.out.print("nine hundred ");
break;
}
}
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
// Requesting User input
System.out.print("Enter a number between 0 and 999: ");
int number = input.nextInt();
// input validation
while (number < 0 || number > 999) {
System.out.println("Input Too Large, ");
System.out.print("Enter a number between 0 and 999: ");
number = input.nextInt();
}
// Below we start to determine what the input was by
// categorising it using boolean
// original number (100-999)
if (number > 99 && number < 1000) {
int h = number / 100; //find the hundreds only (one, two hundred)
hundreds(h); //print number
// first part of number found & printed (hundreds)
// remamining 2 digits must be found ie tens & units
// test if they are a special number
int x = 0; // initialized variable x for calculations
x = number % 100; // find remainder of hundreds (ie x54)
if (x > 10 && x < 20) { // ie is 54 a special number?
special(x); // print number
}
// if not special number -> split up into tens & units
if (x > 0 && x < 100) {
int tens = x / 10; // finding the tens (forty, fifty)
tens(tens); // print number
int units = x % 10; // finding the units (one, two)
units(units); // print number
}
}
// original number (20-99)
if (number > 19 && number < 100) {
int t = number / 10; // finding the tens (forty, fifty)
tens(t); // print number
int u = number % 10; // finding the units (one, two)
units(u); // print number
}
// original number (11-19) (Special numbers)
if (number > 10 && number < 20) { // (Special numbers)
special(number); // print number
}
// original number (0-9)
if (number < 10) { // finding the units (one, two)
units(number); // print number
}
}
}
Online 
Offline 
Unsolved 
