siscanf, fiscanf, iscanf—scan and format non-floating input #include <stdio.h>
int iscanf(const char *format, ...);
int fiscanf(FILE *fd, const char *format, ...);
int siscanf(const char *str, const char *format, ...);
int _iscanf_r(struct _reent *ptr, const char *format, ...);
int _fiscanf_r(struct _reent *ptr, FILE *fd,
const char *format, ...);
int _siscanf_r(struct _reent *ptr, const char *str,
const char *format, ...);
Description
iscanf, fiscanf, and siscanf are the same as
scanf, fscanf, and sscanf respectively, only that
they restrict the available formats to non-floating-point
format specifiers.
The routines _iscanf_r, _fiscanf_r, and _siscanf_r are reentrant
versions of iscanf, fiscanf, and siscanf that take an additional
first argument pointing to a reentrancy structure.
Returns
iscanf returns the number of input fields successfully
scanned, converted and stored; the return value does
not include scanned fields which were not stored.
If iscanf attempts to read at end-of-file, the return
value is EOF.
If no fields were stored, the return value is 0.
Portability
iscanf, fiscanf, and siscanf are newlib extensions.
Supporting OS subroutines required: close, fstat, isatty,
lseek, read, sbrk, write.