Archibald Haddock (123456789)
COMP-202A, Section 0 (Fall 2010)
Instructor: Cuthbert Calculus
Assignment 3, Question 1a

Point A:

decimal     local var
input       local var
args        formal param

Point B

decimal     formal param
hex         local var

Point C

decimal     formal param
hex         local var
hexValue    local var

Point D

decimal     formal param
hex         local var


import java.util.Scanner;

public class Decimal2HexConversion {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    System.out.print("Enter a decimal number: ");
    int decimal = input.nextInt();
    /* Point A */
    System.out.println("The hex number for decimal " +
    decimal + " is " + decimalToHex(decimal));
  }

  public static String decimalToHex(int decimal) {
    String hex = "";
    while (decimal != 0) {
    /* Point B */
      int hexValue = decimal % 16;
      hex = toHexChar(hexValue) + hex;
      decimal = decimal / 16;
    /* Point C */
    }
    /* Point D */
    return hex;
  }

  public static char toHexChar(int hexValue) {
    if (hexValue <= 9 && hexValue >= 0)
    return (char)(hexValue + '0');
    else
    return (char)(hexValue - 10 + 'A');
  }