Conversion Program

#include<stdio.h>
#include<conio.h>
#define MAX 25
void binary(int number)
{
    int binary[MAX], i, count=-1;
    i = number;
    do
    {
        i /= 2;
        count++;
    } while (i);
    i = count;
    for (count; count >= 0; count--)
    {
        binary[count] = number % 2;
        number /= 2;
    }
    for (count = 0; count <= i; count++) printf("%d", binary[count]);
}

void octal(int number)
{
    int octal[MAX], i, count = -1;
    i = number;
    do
    {
        i /= 8;
        count++;
    } while (i);
    i = count;
    for (count; count >= 0; count--)
    {
        octal[count] = number % 8;
        number /= 8;
    }
    for (count = 0; count <= i; count++) printf("%d", octal[count]);
}
void hex(int number)
{
    int hexadec[MAX], i, count = -1;
    i = number;
    do
    {
        i /= 16;
        count++;
    } while (i);
    i = count;
    for (count; count >= 0; count--)
    {
        hexadec[count] = number % 16;
        number /= 16;
    }
    for (count = 0; count <= i; count++) printf("%c",hexadec[count]<10?hexadec[count]+48:hexadec[count]+55);
}

void main()
{
int num;
printf("Please enter a number: ");
scanf_s("%d", &num);

printf("\nThe number %d in binary is ", num);
binary(num);
printf("\nThe number %d in octal is ", num);
octal(num);
printf("\nThe number %d in hex is ",num);
hex(num);
_getch();
}