2 fflush - flush output to file
13 This function forces a buffered output to the file associated with fd.
16 > fd = fopen("/tmp/file", "w")
21 fd must be associated with an open file
27 errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
28 fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt