size_t _IOLBF FILENAME_MAX TMP_MAX
FILE _IONBF L_tmpnam stderr
fpos_t BUFSIZ SEEK_CUR stdin
NULL EOF SEEK_END stdout
_IOFBF FOPEN_MAX SEEK_SET
int remove(const char *filename);
int rename(const char *old, const char *new);
FILE *tmpfile(void);
char *tmpnam(char *s);
int fclose(FILE *stream);
int fflush(FILE *stream);
FILE *fopen(const char *restrict filename, const char *restrict mode);
FILE *freopen(const char *restrict filename, const char *restrict mode,
FILE *restrict stream);
void setbuf(FILE *restrict stream, char *restrict buf);
int setvbuf(FILE *restrict stream, char *restrict buf, int mode, size_t size);
int fprintf(FILE *restrict stream, const char *restrict format, ...);
int fscanf(FILE *restrict stream, const char *restrict format, ...);
int printf(const char *restrict format, ...);
int scanf(const char *restrict format, ...);
int snprintf(char *restrict s, size_t n, const char *restrict format, ...);
int sprintf(char *restrict s, const char *restrict format, ...);
int sscanf(const char *restrict s, const char *restrict format, ...);
int vfprintf(FILE *restrict stream, const char *restrict format, va_list arg);
int vfscanf(FILE *restrict stream, const char *restrict format, va_list arg);
int vprintf(const char *restrict format, va_list arg);
int vscanf(const char *restrict format, va_list arg);
int vsnprintf(char *restrict s, size_t n, const char *restrict format,
va_list arg);
int vsprintf(char *restrict s, const char *restrict format, va_list arg);
int vsscanf(const char *restrict s, const char *restrict format, va_list arg);
int fgetc(FILE *stream);
char *fgets(char *restrict s, int n, FILE *restrict stream);
int fputc(int c, FILE *stream);
int fputs(const char *restrict s, FILE *restrict stream);
int getc(FILE *stream);
int getchar(void);
char *gets(char *s);
int putc(int c, FILE *stream);
int putchar(int c);
int puts(const char *s);
int ungetc(int c, FILE *stream);
size_t fread(void *restrict ptr, size_t size, size_t nmemb,
FILE *restrict stream);
size_t fwrite(const void *restrict ptr, size_t size, size_t nmemb,
FILE *restrict stream);
int fgetpos(FILE *restrict stream, fpos_t *restrict pos);
int fseek(FILE *stream, long int offset, int whence);
int fsetpos(FILE *stream, const fpos_t *pos);
long int ftell(FILE *stream);
void rewind(FILE *stream);
void clearerr(FILE *stream);
int feof(FILE *stream);
int ferror(FILE *stream);
void perror(const char *s);