#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

int countBinary(unsigned int value) {
    unsigned int count = 0;
    while (value) {
        count += value & 1;
        value >>= 1;
    }
    return count;
}

int main(int argc, char* argv[])
{
    const int WA = 11;
    FILE* data;
    FILE* alfa;
    FILE* beta;

    errno_t errd;
    errno_t erra;
    errno_t errb;

    errd = fopen_s(&data, "Odczyty.txt", "r");
    erra = fopen_s(&alfa, "Alfa.txt", "w");
    errb = fopen_s(&beta, "Beta.txt", "w");

    if (errd != 0 || erra != 0 || errb != 0) {
        printf("Error openning files.\n");
        return 1;
    }

    // Variable for chaning the output
    FILE* current = alfa;

    unsigned int number;

    while (fscanf_s(data, "%u", &number) == 1) {
        if (countBinary(number) == WA && current == alfa) {
            current = beta;
            continue;
        }
        else if (countBinary(number) == WA && current == beta) {
            current = alfa;
            continue;
        }

        fprintf(current, "%u\n", number);
    }
    if (feof(data)) {
        printf("EOF - Procces finished.\n");
    }
    else {
        printf("EOF error.\n");
        return 1;
    }

    fclose(data);
    fclose(alfa);
    fclose(beta);
    return 0;
}