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Overview
Related Modules:
Description:
Declares common functions used for performing input and output (I/O) operations.
You can use the functions provided in this file to perform the I/O operations required during development. Distinguished by I/O targets, there are standard I/O, file stream I/O, and string I/O.
Since:
1.0
Version:
1.0
Summary
Typedefs
| Typedef Name | Description |
|---|---|
| FILE | typedef struct _IO_FILE Struct of file stream. |
Functions
| Function Name | Description |
|---|---|
| fopen (const char __restrict path, const char restrict mode) | FILE Opens the file stored in the specified path based on the given mode. |
| fclose (FILE fd) | int Closes a file based on the specified file descriptor. |
| remove (const char pathname) | int Deletes a specified file or directory from the file system. |
| rename (const char oldpath, const char newpath) | int Renames a specified file. |
| feof (FILE fp) | int Tests the end-of-file indicator for a specified stream. |
| ferror (FILE stream) | int Tests for the error identifier of a specified file stream. |
| fflush (FILE fp) | int Flushes the output buffer of a specified stream. |
| clearerr (FILE fp) | void Resets the error indicators. |
| fseek (FILE fp, long offset, int whence) | int Changes the position of a specified stream to a new position. |
| ftell (FILE fp) | long Obtains the current value of the file position indicator for a specified file stream. |
| rewind (FILE stream) | void Sets the position indicator of a specified stream to the beginning of the file. |
| fgetpos (FILE stream, fpos_t pos) | int Obtains the current file position of a specified stream and writes it to the pos parameter. |
| fsetpos (FILE fp, const fpos_t pos) | int Sets the file position indicator for a specified file stream. |
| fread (void *restrict ptr, size_t size, size_t nmemb, FILE __restrict stream) | size_t Reads data from a specified stream. |
| fwrite (const void restrict ptr, size_t size, size_t nmemb, FILE *restrict stream) | size_t Writes data to a specified stream. |
| getc (FILE stream) | int Reads a character from a specified file stream. |
| getchar (void) | int Obtains the next character from the standard input (stdin). |
| ungetc (int c, FILE stream) | int Pushes a character back into a specified file stream. |
| fputc (int c, FILE stream) | int Writes a character into the position pointed to by a specified stream. |
| putc (int c, FILE stream) | int Writes a character to a specified file stream. |
| putchar (int c) | int Writes a character into the standard output (stdout). |
| fgets (char s, int size, FILE stream) | char Reads a line of characters from a specified file stream and stores it into the string pointed to by s. |
| gets (char s) | char Reads a line of characters from the stdin and stores it in the buffer. |
| fputs (const char s, FILE stream) | int Writes a character string (excluding the terminating null character) to a specified file stream. |
| puts (const char s) | int Writes a character string and appends a new-line character to the stdout. |
| printf (const char format,…) | int Formats arguments based on format and prints formatted data to the stdout. |
| fprintf (FILE stream, const char format,…) | int Formats arguments based on format and prints formatted data to a specified file stream. |
| sprintf (char str, const char format,…) | int Prints formatted data from a variable argument list to a specified string. |
| snprintf (char str, size_t size, const char format,…) | int Prints formatted data of a maximum of size bytes from a variable argument list to a specified string. |
| vprintf (const char format, va_list ap) | int Prints formatted data from a variable argument list to the stdout. |
| vfprintf (FILE stream, const char format, va_list ap) | int Prints formatted data from a variable argument list to a specified file stream. |
| vsprintf (char str, const char format, va_list ap) | int Prints formatted data from a variable argument list to a specified string. |
| vsnprintf (char str, size_t size, const char format, va_list ap) | int Prints formatted data of a maximum of size bytes from a variable argument list to a specified string. |
| scanf (const char format,…) | int Reads formatted data from the stdin and stores the data to the additional arguments based on format. |
| fscanf (FILE stream, const char format,…) | int Reads formatted data from a specified file stream and stores it based on format into the locations pointed to by the variable arguments. |
| sscanf (const char str, const char format,…) | int Reads data from a character string pointed to by str and stores it based on format into the locations pointed to by the variable arguments. |
| vscanf (const char format, va_list ap) | int Reads data from the stdin and stores it based on format into the locations pointed to by the elements in the variable argument list identified by ap. |
| vfscanf (FILE stream, const char format, va_list ap) | int Reads data from a specified file stream and stores it based on format into the locations pointed to by the elements in the variable argument list identified by ap. |
| vsscanf (const char str, const char format, va_list ap) | int Reads data from a specified string and stores it based on format into the locations pointed to by the elements in the variable argument list identified by ap. |
| perror (const char msg) | void Prints the last error occurred during a call to a system or library function to the standard error output stream (stderr). |
| setvbuf (FILE stream, char buf, int mode, size_t size) | int Sets the mode and size of the buffer for a specified stream. |
| setbuf (FILE stream, char buf) | void Sets a buffer to be used by a specified stream. |
| fmemopen (void buf, size_t size, const char mode) | FILE Opens a memory stream that allows the access mode specified by mode. |
| open_memstream (char ptr, size_t size) | FILE Opens a stream for writing to a specified buffer. |
| pclose (FILE f) | int Closes a specified pipe. |
| fileno (FILE fp) | int Obtains the file descriptor of a specified file stream. |
| fseeko (FILE fp, off_t offset, int whence) | int Sets the position of the next input or output operation on a specified file stream. |
| ftello (FILE fp) | off_t Obtains the current value of the file position indicator for a specified file stream. |
| dprintf (int fd, const char format,…) | int Prints formatted data to a specified file. |
| vdprintf (int fd, const char format, va_list ap) | int Prints formatted data from a variable argument list to a specified file. |
| ftrylockfile (FILE filehandle) | int Locks a specified file. |
| funlockfile (FILE filehandle) | void Unlocks a specified file. |
| getc_unlocked (FILE stream) | int Obtains a character from a specified file stream without locking the file stream or checking whether it is locked. |
| getchar_unlocked (void) | int Obtains the next character from stdin. |
| putc_unlocked (int c, FILE stream) | int Writes a character to a specified file stream with the thread remains unlocked. |
| putchar_unlocked (int c) | int Writes a character to the stdout with the thread remains unlocked. |
| getdelim (char lineptr, size_t n, int delim, FILE stream) | ssize_t Reads an entire line from a specified file stream. |
| getline (char lineptr, size_t n, FILE stream) | ssize_t Reads an entire line from a specified file stream. |
| tempnam (const char dir, const char prefix) | char Creates a temporary file with a unique file name. |
| setbuffer (FILE f, char buf, size_t size) | void Sets the buffer for a specified file stream. |
| setlinebuf (FILE f) | void Sets the linear buffer for a specified file stream. |
| fgetc (FILE stream) | int Reads a character from the file pointed to by stream. |
| fgetc_unlocked (FILE stream) | int Reads a character from the file pointed to by stream with the thread remains unlocked. |
| fputc_unlocked (int c, FILE stream) | int Writes a character to the file stream pointed to by stream at the current position. |
| ferror_unlocked (FILE stream) | int Tests for the error identifier of a specified file stream. |
| getw (FILE stream) | int Reads a word (an int value) from a specified file stream. |
| putw (int w, FILE stream) | int Writes a word (an int value) to a specified file stream. |
| fgetln (FILE stream, size_t len) | char * Reads a line of data from the current position of a specified file stream. |
| asprintf (char strp, const char fmt,…) | int Prints formatted data to a specified character string. |
| vasprintf (char **strp, const char fmt, va_list ap) | int Prints formatted data from a variable argument list to a specified character string. |
