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

int fnextc(FILE* in) {
    int ch = fgetc(in);
    ungetc(ch, in);
    return ch;
}

void checkFile(FILE* in, FILE* out) {
    if (in == NULL) {
        fputs("File is not found", out);
        printf("File is not found");
        fclose(out);
        exit(1);
    }

    if (fnextc(in) == EOF) {
        fputs("File is empty", out);
        printf("File is empty");
        fclose(in);
        fclose(out);
        exit(2);
    }
}

int main() {
    const char *freadname = "../input.txt";
    const char *fwritename = "../output.bin";
    const int L = 256;

    FILE* in = fopen(freadname, "rt");
    FILE* out = fopen(fwritename, "wb");

    checkFile(in, out);

    char string[L];

    int n = 0;
    int q = fgets(string, L, in);
    while (q != 0) {
        while (string[n] != '\0' && string[n] != '\n') {
            n++;
        }
        fwrite(&n, sizeof(int), 1, out);
        fwrite(&string, sizeof(char), n, out);
        n = 0;
        q = fgets(string, L, in);
    }

    fclose(in);
    fclose(out);
    return 0;
}