Float Mit sprintf einlesen

NAME

     fscanf, scanf, sscanf, vfscanf, vscanf, vsscanf -- input format conversion

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdio.h>

     int

     fscanf(FILE *restrict stream, const char *restrict format, ...);

     int

     scanf(const char *restrict format, ...);

     int

     sscanf(const char *restrict s, const char *restrict format, ...);

     #include <stdarg.h>

     #include <stdio.h>

     int

     vfscanf(FILE *restrict stream, const char *restrict format, va_list arg);

     int

     vscanf(const char *restrict format, va_list arg);

     int

     vsscanf(const char *restrict s, const char *restrict format, va_list arg);

DESCRIPTION

     The scanf() family of functions scans input according to a format, as described below.  This format may contain

     conversion specifiers; the results from such conversions, if any, are stored through the pointer arguments.  The

     scanf() function reads input from the standard input stream stdin, fscanf() reads input from the stream pointer

     stream, and sscanf() reads its input from the character string pointed to by s.

     The vfscanf() function is analogous to vfprintf(3) and reads input from the stream pointer stream using a vari-

     able argument list of pointers (see stdarg(3)).  The vscanf() function scans a variable argument list from the

     standard input and the vsscanf() function scans it from a string; these are analogous to the vprintf() and

     vsprintf() functions, respectively.

     Each successive pointer argument must correspond properly with each successive conversion specifier (but see the

     * conversion below).  All conversions are introduced by the % (percent sign) character.  The format string may

     also contain other characters.  White space (such as blanks, tabs, or newlines) in the format string match any

     amount of white space, including none, in the input.  Everything else matches only itself.  Scanning stops when

     an input character does not match such a format character.  Scanning also stops when an input conversion cannot

     be made (see below).

     Extended locale versions of these functions are documented in scanf_l(3).  See xlocale(3) for more information.

CONVERSIONS

     Following the % character introducing a conversion, there may be a number of flag characters, as follows:

     *        Suppresses assignment.  The conversion that follows occurs as usual, but no pointer is used; the result

              of the conversion is simply discarded.

     hh       Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a char

              (rather than int).

     h        Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a short int

              (rather than int).

     l (ell)  Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a long int

              (rather than int), that the conversion will be one of a, e, f, or g and the next pointer is a pointer to

              double (rather than float), or that the conversion will be one of c, s or [ and the next pointer is a

              pointer to an array of wchar_t (rather than char).

     ll (ell ell)

              Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a long long

              int (rather than int).

     L        Indicates that the conversion will be one of a, e, f, or g and the next pointer is a pointer to long

              double.

     j        Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a intmax_t

              (rather than int).

     t        Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a ptrdiff_t

              (rather than int).

     z        Indicates that the conversion will be one of dioux or n and the next pointer is a pointer to a size_t

              (rather than int).

     q        (deprecated.)  Indicates that the conversion will be one of dioux or n and the next pointer is a pointer

              to a long long int (rather than int).

     In addition to these flags, there may be an optional maximum field width, expressed as a decimal integer, between

     the % and the conversion.  If no width is given, a default of ``infinity'' is used (with one exception, below);

     otherwise at most this many bytes are scanned in processing the conversion.  In the case of the lc, ls and l[

     conversions, the field width specifies the maximum number of multibyte characters that will be scanned.  Before

     conversion begins, most conversions skip white space; this white space is not counted against the field width.

     The following conversions are available:

     %     Matches a literal `%'.  That is, ``%%'' in the format string matches a single input `%' character.  No con-

           version is done, and assignment does not occur.

     d     Matches an optionally signed decimal integer; the next pointer must be a pointer to int.

     i     Matches an optionally signed integer; the next pointer must be a pointer to int.  The integer is read in

           base 16 if it begins with `0x' or `0X', in base 8 if it begins with `0', and in base 10 otherwise.  Only

           characters that correspond to the base are used.

     o     Matches an octal integer; the next pointer must be a pointer to unsigned int.

     u     Matches an optionally signed decimal integer; the next pointer must be a pointer to unsigned int.

     x, X  Matches an optionally signed hexadecimal integer; the next pointer must be a pointer to unsigned int.

     a, A, e, E, f, F, g, G

           Matches a floating-point number in the style of strtod(3).  The next pointer must be a pointer to float

           (unless l or L is specified.)

     s     Matches a sequence of non-white-space characters; the next pointer must be a pointer to char, and the array

...

  float fVar = 0;

  int iVar = 0;

  sscanf( fVar, "%f", &text );

  fVar *= 10;

  iVar = (int)fVar;

  printf( "Wert: %d", iVar );