// covert from decimal to base b

#include <iostream.h>
#include <stdio.h>
#include <math.h>                // use math function floor, ceil
#define Size 100

static int a[Size] = {0};        // *hold base b representation; initialized to 0
								 // static: allow to use in different blocks

void DecToBase_b(int n, int b)   // function converting a positive integer to base b form
{
	int q = n;                   // if passing by reference, required
	int k = 0;

	while (q != 0)
	{
		a[k] = q % b;
		q = (int) floor(q/b);    // floor receives double and returns double
		k++;                     // k = k + 1;
	}

	a[Size] = k - 1;             // *hold length of base b representation
}


void main(void) 
{
	int decimal, base;
	int continued = 1;

	while (continued)
	{
		cout << "enter a positive decimal number and a base, in order: ";
		cin >> decimal >> base;

		DecToBase_b(decimal, base);
   
		cout << "base " << base << " representation = "; 
		for (int i = a[Size]; i >= 0; i--)           // output base b form
			cout << a[i] << " ";
		cout << endl;

		cout << "continue? enter 1 if yes, 0 if not: " << endl; // command
		cin >> continued;
		cout << endl;
	}

	cout << "enter a character to exit" << endl;
	getchar(); 
}