/*
 * C Program to Convert a Number Decimal System to Binary System using Recursion
 */
#include <stdio.h>

int convert(int);

int main()
{
    int dec, bin;
    printf("Enter a decimal number: ");
    scanf("%d", &dec);
    bin = convert(dec);
    printf("The binary equivalent of %d is %d.\n", dec, bin);
    return 0;
}

int convert(int dec)
{
    if (dec == 0)
        {
            return 0;
        }
    else
        {
            return (dec % 2 + 10 * convert(dec / 2));
        }
}