Decimal to any base converter

decimal2baseConverter.c

#include <stdio.h>


int main(int argc, char *argv[]) {
	
	int userInput = 2156; //number to convert
	int  base = 16; // change base here
	int anws[10] = {}; //couldn't get dynamic array to work. Do not like this way.
	int count = 0;
	
	
	do {
	
		anws[count] = userInput % base;
		userInput = userInput / base;
		
		count++;
		
	} while (userInput != 0);
	
	int  negcount = count - 1;

	for (int i = (count -1); i >= 0; i--) {
	
		if(anws[negcount] == 0){
			negcount = 1;
			continue;
		}
			
		if (base == 16){
			if(anws[i] == 10){
				printf("A");
				continue;
		    }
			else if(anws[i] == 11){
				printf("B");
				continue;
			}
			else if(anws[i] == 12){
				printf("C");
				continue;
			}
			else if(anws[i] == 13){
				printf("D");
				continue;
			}
			else if(anws[i] == 14){
				printf("E");
				continue;
			}
			else if(anws[i] == 15){
				printf("F");
				continue;
			}
		}
			
		printf("%i", anws[i]);
		
	}// for loop
	
}//main

decimal2baseConverter.java

import java.util.ArrayList;
class Untitled {
	public static void main(String[] args) {
		
		int userInput = 2156; //number to convert
		int base = 16; // Change base here 
		ArrayList <Integer> anws =  new ArrayList<Integer>();
		
		int count = 0;
		
		do {
			
			anws.add (userInput % base);
			userInput = userInput / base;
			
			count++;
			
		} while (userInput != 0);
		
		for (int i = (count -1); i >= 0; i--) {
			
			
			if (base == 16) {
				if (anws.get(i) == 10) {
					System.out.print("A");
					continue;
				}
				if (anws.get(i) == 11) {
					System.out.print("B");
					continue;
				}								
				if (anws.get(i) == 12) {
					System.out.print("C");
					continue;
				}
				if (anws.get(i) == 13) {
					System.out.print("D");
					continue;
				}
				if (anws.get(i) == 14) {
					System.out.print("E");
					continue;
				}
				if (anws.get(i) == 15) {
					System.out.print("F");
					continue;
				}
			}
			System.out.print(anws.get(i));
		}//for loop
		
	}// main method
}// class

decimal2baseConverter.php

<?php
	
	$userInput = 15; // number to convert
	$base = 2; //Change base here 
	
	$anws = array();
	
		$count = 0;
		do{	
		$anws[$count] = $userInput % $base;
		$userInput = intval($userInput / $base);
		$count++;
		} while($userInput != 0);
	
	
	$tempnum = count($anws) ;
	
	for ($i = $tempnum; $i >= 0 ; $i--) {
		echo $anws[$i];
	}

	
?>

To convert to hex use a simple if statement within the do-while loop before $count++;

if ($base == 16){
if($anws[$count] == 10){
$anws[$count] = 'A';
}
if($anws[$count] == 11){
$anws[$count] = 'B';
}
if($anws[$count] == 12){
$anws[$count] = 'C';
}
if($anws[$count] == 13){
$anws[$count] = 'D';
}
if($anws[$count] == 14){
$anws[$count] = 'E';
}
if($anws[$count] == 15){
$anws[$count] = 'F';
}

Above comment is for php only