#include <stdio.h>
#include <wiringPi.h>

int binary(int num) {
    int mult = 1;
    int res = 0;
    while(num > 1) {
        int d = num % 2;
        res += d * mult;
        mult *= 10;
        num /= 2;
    }
    res += num * mult;
    return res;
}

int main (void)
{
    int num;
    printf("Dame el numero para pasar a binario: ");
    scanf("%d", &num);

    wiringPiSetup();
    pinMode(0, OUTPUT);
    digitalWrite(0, LOW);
    pinMode(1, OUTPUT);
    digitalWrite(1, LOW);
    pinMode(2, OUTPUT);
    digitalWrite(2, LOW);
    pinMode(4, OUTPUT);
    digitalWrite(4, LOW);

    int res = binary(num);
    if(res % 10 == 1) {
        digitalWrite(4, HIGH);
    } else {
        digitalWrite(4, LOW);
    }
    res /= 10;
    if(res % 10 == 1) {
        digitalWrite(2, HIGH);
    } else {
        digitalWrite(2, LOW);
    }
    res /= 10;
    if(res % 10 == 1) {
        digitalWrite(1, HIGH);
    } else {
        digitalWrite(1, LOW);
    }
    res /= 10;
    if(res % 10 == 1) {
        digitalWrite(0, HIGH);
    } else {
        digitalWrite(0, LOW);
    }
    return 0 ;
}