ansi c write unsigned short to file

int write_obj_file  (char* filename, unsigned short int program_bin[ROWS] ){

    FILE *fptr = fopen(filename, "wb");
    if (fptr == NULL)
        return -1;

    unsigned short int code = 0xABCD;
    if (fwrite(&code, sizeof(code), 1, fptr) < 1) {
        fclose(fptr);
        return -1;
    }

    unsigned short int code2 = 0x0000;
    if (fwrite(&code2, sizeof(code2), 1, fptr) {
        fclose(fptr);
        return -1;
    }

    unsigned short int code3 = 0x0001;
    if (fwrite(&code3, sizeof(code3), 1, fptr) {
        fclose(fptr);
        return -1;
    }

    unsigned short int code4 = 0x1101;
    if (fwrite(&code4, sizeof(code4), 1, fptr) {
        fclose(fptr);
        return -1;
    }

    fclose(fptr);
    return 0;
}