#ifndef _STDIO_H#define _STDIO_H #include <sys/types.h>#include <stddef.h>#include <stdarg.h>  typedef struct {	int fd;			// Underlying file descriptor 	unsigned char bufmode;	// Buffering mode	unsigned char eofflag;	// End-of-file indicator	unsigned char errflag;	// Error indicator 	unsigned char *obuf;	// Output buffer	unsigned opos;		// Write position in output buffer	unsigned omax;		// Size of output buffer 	unsigned char *ibuf;	// Input buffer	unsigned ipos;		// Read position in input buffer	unsigned ilim;		// Read limit in input buffer	unsigned imax;		// Size of input buffer 	int append;		// Always append to end of file	int isstring;		// is constant string	unsigned ioffset;	// offset of last read} FILE; typedef signed long long fpos_t; #define EOF		(-1)	// End-of-file return value. #ifndef SEEK_SET#define SEEK_SET	0	// Seek relative to start-of-file.#define SEEK_CUR	1	// Seek relative to current position.#define SEEK_END	2	// Seek relative to end-of-file.#endif #define BUFSIZ		1024	// Standard I/O buffer size #define _IOFBF		0	// Input/output fully buffered.#define _IOLBF		1	// Input/output line buffered.#define _IONBF		2	// Input/output unbuffered.  // Standard I/O streamsextern FILE __stdin, __stdout, __stderr;#define stdin (&__stdin)#define stdout (&__stdout)#define stderr (&__stderr)  #define L_tmpnam	20  // File handlingFILE *fopen(const char *path, const char *mode);FILE *fdopen(int fildes, const char *mode);FILE *freopen(const char *path, const char *mode, FILE *stream);int fclose(FILE *fp); // Temporary filesFILE *tmpfile(void);char *tmpnam(char *buf); // Character outputint fputc(int c, FILE *f);int putc(int c, FILE *f);int putchar(int c);#define putc(c,f)	((f)->opos < (f)->omax && (c) != '\n' \				? (int)((f)->obuf[(f)->opos++] = (c)) \				: fputc(c,f))#define putchar(c)	putc(c, stdout) // Unformatted outputint fputs(const char *s, FILE *f);int puts(const char *s);size_t fwrite(const void *__restrict buf, size_t eltsize, size_t nelts,		FILE *__restrict f); // Formatted outputint printf(const char *format, ...);int fprintf(FILE *f, const char *fmt, ...);int sprintf(char *buf, const char *fmt, ...);int snprintf(char *buf, int n, const char *fmt, ...); int vprintf(const char *format, va_list ap);int vfprintf(FILE *f, const char *fmt, va_list ap);int vsprintf(char *buf, const char *fmt, va_list ap);int vsnprintf(char *buf, int n, const char *fmt, va_list ap); // Character inputint fgetc(FILE *f);int getc(FILE *f);int getchar(void);int ungetc(int c, FILE *f);#define getc(f)		((f)->ipos < (f)->ilim \				? (int)((f)->ibuf[(f)->ipos++]) \				: fgetc(f))#define getchar()	getc(stdin)int ungetc(int, FILE*); // Unformatted inputchar *gets(char *s);char *fgets(char *s, int size, FILE *stream);size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream); // Formatted inputint scanf(const char *__restrict format, ... );int fscanf(FILE *__restrict f, const char *__restrict format, ... );int sscanf(const char *__restrict str, const char *__restrict format, ... ); int vscanf(const char *__restrict format, va_list);int vfscanf(FILE *__restrict f, const char *__restrict format, va_list);int vsscanf(const char *__restrict str, const char *__restrict format, va_list); // Seek positionint fseek(FILE *stream, long offset, int whence);long ftell(FILE *stream);void rewind(FILE *stream);int fgetpos(FILE *__restrict f, fpos_t *__restrict pos);int fsetpos(FILE *f, const fpos_t *pos); off_t ftello(FILE *stream); // Error/EOF handlingint feof(FILE *f);int ferror(FILE *f);void clearerr(FILE *f);#define feof(f)		((int)(f)->eofflag)#define ferror(f)	((int)(f)->errflag)#define clearerror(f)	((void)((f)->errflag = 0)) // Buffer managementint fflush(FILE *f);void setbuf(FILE *__restrict f, char *__restrict buf);int setvbuf(FILE *__restrict f, char *__restrict buf, int type, size_t size); // Misc#define fileno(f)	((f)->fd) void perror(const char*);int remove(const char*); // File managementint remove(const char *path);int rename(const char *from, const char *to); #define FILENAME_MAX 1024 #endif	// _STDIO_H