Bitwise 1024

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

int main(int argc, char** argv) {
    int count_of_numbers;
    scanf("%d", &count_of_numbers);

    unsigned long long numbers[count_of_numbers];

    int i;
    for (i = 0; i < count_of_numbers; i++) {
        scanf("%llu", &numbers[i]);
    }

    while (1) {
        char direction[6];
        scanf("%s", direction);

        if (strcmp(direction, "end") == 0) {
            break;
        }

        unsigned long long start_position;
        scanf("%llu", &start_position);

        unsigned long long mask = 1;
        int number_index;
        for (number_index = 0; number_index < count_of_numbers; number_index++) {
            int bit_index;
            int target_index;
            int target_set = 0;

            if (strcmp(direction, "right") == 0) {
                for (bit_index = 0; bit_index <= start_position; bit_index++) {
                    unsigned long long bit = (numbers[number_index] >> bit_index) & mask;
                    if (bit == 1 && target_set == 1) {
                        numbers[number_index] |= mask << target_index;
                        numbers[number_index] &= ~(mask << bit_index);
                        target_set = 0;
                        bit_index = 0;
                    } else if (bit == 0 && target_set == 0) {
                        target_index = bit_index;
                        target_set = 1;
                    }
                }
            } else if (strcmp(direction, "left") == 0) {
                for (bit_index = 63; bit_index >= start_position; bit_index--) {
                    unsigned long long bit = (numbers[number_index] >> bit_index) & mask;
                    if (bit == 1 && target_set == 1) {
                        numbers[number_index] |= mask << target_index;
                        numbers[number_index] &= ~(mask << bit_index);
                        target_set = 0;
                        bit_index = 63;
                    } else if (bit == 0 && target_set == 0) {
                        target_index = bit_index;
                        target_set = 1;
                    }
                }
            }
        }
    }

    for (i = 0; i < count_of_numbers; i++) {
        printf("%llu\n", numbers[i]);
    }

    return (EXIT_SUCCESS);
}