decToBin

void decToBinRec(unsigned int n){
    if (n != 0){
        decToBinRec(n / 2);

        if (n % 2 == 0) printf("%d", 0);
        else printf("%d", 1);
    }
}


void decToBin(unsigned int n){
    if (n == 0) printf("%d", 0);
    decToBinRec(n);
}