pSOSystem System Calls - Read

fscanf pREPC+ System Calls
fscanf Reads formatted input from a stream.
#include
#include
int fscanf(
FILE *stream, /* stream pointer */
const char *format, /* format control string */
... /* arguments 1 through n */
)
Description
Arguments
The fscanf() function reads input from the stream specified by stream. As input
is read, it is divided into input fields. An input field is defined as a string of nonwhite
space characters. It extends either to the next white space character or up to
a specified field width. The input fields are handled in a manner determined by a
format control string. The input fields are converted to data items and stored in
variables pointed to by the remaining arguments. If insufficient arguments are
provided for format, the behavior is undefined. If format is exhausted while
arguments remain, the excess arguments are evaluated but are otherwise ignored.
stream Points to an open pREPC+ stream.
format Points to the format control string. The format is a multibyte
character sequence, beginning and ending with its initial shift state.
It is composed of zero or more directives: one or more white-space
characters; an ordinary multibyte character (neither % nor a whitespace
character); or a conversion specification. Each conversion
specification is introduced by the character %. After the %, the
following appear in sequence:
■ An optional assignment-suppressing character *.
■ An optional nonzero decimal integer that specifies the maximum
field width.
3-56 pSOSystem System Calls