#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

int main(int argc, char ** argv)
 {
    char file_name[128];
    strcpy(file_name, argv[1]);
    FILE *p = fopen(file_name, "rb");

    char c;
    struct stat st;
    stat(argv[1], &st);
    int file_length = st.st_size;
    fclose(p);

    char action;

    action = argv[2][0];
    int bits = atoi(argv[3]);
    char file_output[128];
    strcpy(file_output, argv[4]);



    if (action == 's')
    {

        int length = strlen(file_output);
        strcat(file_output,"_0.txt");
        length++;

        int n = file_length / bits;
        FILE *p = fopen(file_name, "rb");
        for (int i = 0; i < n; i++)
        {
            file_output[length] = i + '0';
            printf("%s", file_output);
            FILE *d = fopen(file_output, "wb");
            for (int j = 0; j < bits; j++)
            {
                char k;
                if ((k = fgetc(p)) == EOF)
                    return 0;
                fputc(k, d);
            }
            fclose(d);
        }
    }

    else if (action == 'n')
    {
        int namber_of_files = bits;
        int stlength = strlen(file_output);
        strcat(file_output,"_0.txt");
        stlength++;
        int length_of_files = file_length / namber_of_files;
        FILE *p = fopen(file_name, "rb");
        for (int i = 0; i < namber_of_files; i++)
        {   printf("%s", file_output);
            file_output[stlength] = i + '0';
            FILE *d = fopen(file_output, "wb");
            for (int j = 0; j < length_of_files; j++)
            {
                char k;
                if ((k = fgetc(p)) == EOF)
                    return 0;
                fputc(k, d);
            }
            fclose(d);


        }

    }
    else
    {
        printf("You make a mistake, try again.");
        return 0;
    }

    return 0;
}