Standard library header <cstdio>
From cppreference.com
This header was originally in the C standard library as <stdio.h>.
This header is part of the C-style input/output library.
Types | ||
| object type, capable of holding all information needed to control a C I/O stream (typedef) | ||
| complete non-array object type, capable of uniquely specifying a position in a file, including its multibyte parse state (typedef) | ||
| unsigned integer type returned by the sizeof operator (typedef) | ||
Macros | ||
| implementation-defined null pointer constant (macro constant) | ||
| expression of type FILE* associated with the input stream expression of type FILE* associated with the output stream expression of type FILE* associated with the error output stream (macro constant) | ||
EOF | integer constant expression of type int and negative value (macro constant) | |
FOPEN_MAX | number of files that can be open simultaneously (macro constant) | |
FILENAME_MAX | size needed for an array of char to hold the longest supported file name (macro constant) | |
BUFSIZ | size of the buffer used by std::setbuf (macro constant) | |
_IOFBF_IOLBF_IONBF | argument to std::setbuf indicating fully buffered I/O argument to std::setbuf indicating line buffered I/O argument to std::setbuf indicating unbuffered I/O (macro constant) | |
SEEK_SETSEEK_CURSEEK_END | argument to std::fseek indicating seeking from beginning of the file argument to std::fseek indicating seeking from the current file position argument to std::fseek indicating seeking from end of the file (macro constant) | |
TMP_MAX | maximum number of unique filenames that can be generated by std::tmpnam (macro constant) | |
L_tmpnam | size needed for an array of char to hold the result of std::tmpnam (macro constant) | |
Functions | ||
File access | ||
| opens a file (function) | ||
| open an existing stream with a different name (function) | ||
| closes a file (function) | ||
| synchronizes an output stream with the actual file (function) | ||
| sets the buffer for a file stream (function) | ||
| sets the buffer and its size for a file stream (function) | ||
Direct input/output | ||
| reads from a file (function) | ||
| writes to a file (function) | ||
Unformatted input/output | ||
Narrow character | ||
| gets a character from a file stream (function) | ||
| gets a character string from a file stream (function) | ||
| writes a character to a file stream (function) | ||
| writes a character string to a file stream (function) | ||
| reads a character from stdin (function) | ||
(deprecated in C++11)(removed in C++14) | reads a character string from stdin (function) | |
| writes a character to stdout (function) | ||
| writes a character string to stdout (function) | ||
| puts a character back into a file stream (function) | ||
Formatted input/output | ||
Narrow/multibyte character | ||
| reads formatted input from stdin, a file stream or a buffer (function) | ||
(C++11)(C++11)(C++11) | reads formatted input from stdin, a file stream or a buffer using variable argument list (function) | |
(C++11) | prints formatted output to stdout, a file stream or a buffer (function) | |
| prints formatted output to stdout, a file stream or a buffer using variable argument list (function) | ||
File positioning | ||
| returns the current file position indicator (function) | ||
| gets the file position indicator (function) | ||
| moves the file position indicator to a specific location in a file (function) | ||
| moves the file position indicator to a specific location in a file (function) | ||
| moves the file position indicator to the beginning in a file (function) | ||
Error handling | ||
| clears errors (function) | ||
| checks for the end-of-file (function) | ||
| checks for a file error (function) | ||
| displays a character string corresponding of the current error to stderr (function) | ||
Operations on files | ||
| erases a file (function) | ||
| renames a file (function) | ||
| creates and opens a temporary, auto-removing file (function) | ||
| returns a unique filename (function) | ||
[edit]Synopsis
namespace std {using size_t =/* see description */;using FILE =/* see description */;using fpos_t =/* see description */;} #define NULL /* see description */#define _IOFBF /* see description */#define _IOLBF /* see description */#define _IONBF /* see description */#define BUFSIZ /* see description */#define EOF /* see description */#define FOPEN_MAX /* see description */#define FILENAME_MAX /* see description */#define L_tmpnam /* see description */#define SEEK_CUR /* see description */#define SEEK_END /* see description */#define SEEK_SET /* see description */#define TMP_MAX /* see description */#define stderr /* see description */#define stdin /* see description */#define stdout /* see description */ namespace std {int remove(constchar* filename);int rename(constchar* old_p, constchar* new_p); FILE* tmpfile();char* tmpnam(char* s);int fclose(FILE* stream);int fflush(FILE* stream); FILE* fopen(constchar* filename, constchar* mode); FILE* freopen(constchar* filename, constchar* mode, FILE* stream);void setbuf(FILE* stream, char* buf);int setvbuf(FILE* stream, char* buf, int mode, size_t size);int fprintf(FILE* stream, constchar* format, ...);int fscanf(FILE* stream, constchar* format, ...);int printf(constchar* format, ...);int scanf(constchar* format, ...);int snprintf(char* s, size_t n, constchar* format, ...);int sprintf(char* s, constchar* format, ...);int sscanf(constchar* s, constchar* format, ...);int vfprintf(FILE* stream, constchar* format, va_list arg);int vfscanf(FILE* stream, constchar* format, va_list arg);int vprintf(constchar* format, va_list arg);int vscanf(constchar* format, va_list arg);int vsnprintf(char* s, size_t n, constchar* format, va_list arg);int vsprintf(char* s, constchar* format, va_list arg);int vsscanf(constchar* s, constchar* format, va_list arg);int fgetc(FILE* stream);char* fgets(char* s, int n, FILE* stream);int fputc(int c, FILE* stream);int fputs(constchar* s, FILE* stream);int getc(FILE* stream);int getchar();int putc(int c, FILE* stream);int putchar(int c);int puts(constchar* s);int ungetc(int c, FILE* stream); size_t fread(void* ptr, size_t size, size_t nmemb, FILE* stream); size_t fwrite(constvoid* ptr, size_t size, size_t nmemb, FILE* stream);int fgetpos(FILE* stream, fpos_t* pos);int fseek(FILE* stream, longint offset, int whence);int fsetpos(FILE* stream, const fpos_t* pos);longint ftell(FILE* stream);void rewind(FILE* stream);void clearerr(FILE* stream);int feof(FILE* stream);int ferror(FILE* stream);void perror(constchar* s);}
