Shulou(Shulou.com)06/01 Report--

Editor to share with you the sample code of IO's Formatted IO. I hope you will get something after reading this article. Let's discuss it together.

Formatted I/O

/ * ANSI * /

/ * write a formatted string to the standard output stream * / int printf (char *,...)

/ * write a formatted string to a buffer * / int sprintf (char *, char *,...)

/ * write a formatted string to a buffer, not exceeding buffer size * / int snprintf (char *, size_t, char *,...)

/ * write a formatted string to a stream * / int fprintf (FILE *, char *,...)

/ * write a formatted string to a stream * / int vfprintf (FILE *, char *, va_list)

/ * write a string formatted with a variable argument list to standard output * / int vprintf (char *, va_list)

/ * write a string formatted with a variable argument list to a buffer * / int vsprintf (char *, char *, va_list)

/ * write a string formatted with a variable argument list to a buffer, not exceeding buffer size * / int vsnprintf (char *, size_t, char *, va_list)

/ * write a formatted string to an output function * / int oprintf (OPRINTF_OUTPUT_FUNCPTR routine, _ Vx_usr_arg_t arg, char *,...)

/ * write a formatted string to an output function * / int voprintf (OPRINTF_OUTPUT_FUNCPTR routine, _ Vx_usr_arg_t arg, char *, va_list)

/ * read and convert characters from the standard input stream * / int scanf (char *,...)

/ * read and convert characters from an ASCII string * / int sscanf (char *, char *,...)

/ * read and convert characters from a stream * / int fscanf (FILE *, char *,...)

The definition of formatting can be seen here.

/ * WRS functions declarations * /

/ * write a formatted string to a file descriptor * / int fdprintf (int, char *,...)

/ * write a string formatted with a variable argument list to a file descriptor * / int vfdprintf (int, char *, va_list)

/ * write a formatted string to the standard error stream * / int printErr (char *,...)

/ * print an exception-generated error message * / void printExc (char *, int, int)

And, of course, kprintf.

After reading this article, I believe you have a certain understanding of the "sample code of IO's Formatted IO". If you want to know more about it, please follow the industry information channel. Thank you for reading!

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