/*-----------------------------------------------------------------------------------------------------
PROGRAMMER:		Kevin Tran
LANGUAGE:		C
CLASS:			CSE 1320-001, "Intermediate Programming", Spring 2011
PLATFORM:		OMEGA
OS:				UNIX
COMPILER:		gcc
ASSIGNMENT:		Lab #0
DUE:			02/07/2011
FILE NAME:      lab0.c
CONCEPTS:		To read two integers n and b where n is a decimal number and b represents a numeric base.
				And convert the decimal number n into a number m in the numeric base b.
------------------------------------------------------------------------------------------------------*/

#include <stdio.h>
#include <stdlib.h>

int main (void)
{
	int mainNum;										/* Variable declarations */
	int numBase;
	int remainder;
	int counter = 0;
	int i;
	int printArray[100];

	scanf("%d", &mainNum);								/* Reads a decimal value and stores it in the variable mainNum and numBase */
	scanf("%d", &numBase);

	if ((numBase >= 2) && (numBase <= 16))				/* If statement that checks if numBase is any number from 2 to 16 */
	{
		while (mainNum > 0)								/* While loop that converts the decimal number mainNum into a number reaminder in the numeric base numBase */
		{
			remainder = mainNum % numBase;
			mainNum = mainNum / numBase;

			printArray[counter] = remainder;			/* Stores reaminder into an array variable printArray at position of counter */
			counter++;									/* Counter is then increased up one value */
		}

		for(i = (counter - 1); i >= 0; i--)				/* For loop that prints printArray in reverse order */
		{
			if (printArray[i] == 10)					/* If and Else If statements that converts number from 10 to 16 into letters a to f */
			{
				printf("a");
			}

			else if (printArray[i] == 11)
			{
				printf("b");
			}

			else if (printArray[i] == 12)
			{
				printf("c");
			}

			else if (printArray[i] == 13)
			{
				printf("d");
			}

			else if (printArray[i] == 14)
			{
				printf("e");
			}

			else if (printArray[i] == 15)
			{
				printf("f");
			}

			else
			{
				printf("%d", printArray[i]);
			}
		}
	}

	if ((numBase < 2) || (numBase > 16))				/* If statement that exits program if numBase is lesser than 2 or greater than 16 */
	{
		exit(0);
	}

	printf("\n");										/* Print statement for a new line to keep output clean */

	return 0;
}