了解一下C语言字符串的拆分函数strtok

pulbieup

char *  strtok ( char * string, const char * delimiters );

Sequentially truncate string if delimiter is found.
9 E& ?, g( U5 I# x* R( S  If string is not NULL, the function scans string for the first occurrence of any character included in delimiters. If it is found, the function overwrites the delimiter in string by a null-character and returns a pointer to the token, i.e. the part of the scanned string previous to the delimiter.
  After a first call to strtok, the function may be called with NULL as string parameter, and it will follow by where the last call to strtok found a delimiter.
1 v  T! M& U; @# U0 D9 e  delimiters may vary from a call to another.

4 r2 X! k. G7 ]2 p. r8 f6 i6 M8 QParameters.
; U) @& a1 O5 l3 q
& d0 X- t* d; V$ \5 f+ O  Ostring
: B0 x: G6 @2 |4 ]( s9 aNull-terminated string to scan.
+ x- X  @( k( }5 g1 Hseparator
; u2 E- a5 `/ cNull-terminated string containing the separators.
. |% p1 j9 v2 J: O' ]Return Value.
% ^; U  t# f% @; c  o  A pointer to the last token found in string.   NULL is returned when there are no more tokens to be found.
9 Z' F9 o  R# @
Portability.
  Defined in ANSI-C.
9 z+ I. R# F2 |6 l
Example.
+ P+ H/ f6 |9 |$ \  i- V
/* strtok example */
8 U# I4 _" D# R' L; \* x5 ]#include <stdio.h>
#include <string.h>
( D9 ^" p/ `5 ]
/ Q- F9 S) z9 A7 g7 \int main ()
) c- K6 p# A9 Q0 p1 {6 n! X: y2 N$ z% I{
" O3 L' w; w2 T: ^2 O7 N/ r- ~  char str[] ="This is a sample string,just testing.";
1 [+ x6 s9 E1 K, I  char * pch;
  printf ("Splitting string \"%s\" in tokens:\n",str);
  pch = strtok (str," ");
  while (pch != NULL)
7 a0 T6 N2 F. n3 P  {
, g% u: ]# `) C/ e( r    printf ("%s\n",pch);
8 M: o) b& t3 ~; X. s# c" R. ]( {    pch = strtok (NULL, " ,.");
: ~' p1 y0 h% l+ h6 D! r  }
- @  V1 b' y* {0 j  return 0;
}
' e5 e; T4 I0 i  E" V- rOutput:
' G. p) N- B3 ZSplitting string "This is a sample string,just testing." in tokens:
This
/ Q& g5 f* M' jis
$ b$ z( M) n) H7 Ua
2 y+ a$ M6 p" J. Z% fsample
string
! a" f! i: i+ @# _just
* M( z0 q6 E# F% }/ y2 utesting

yin123

了解一下C语言字符串的拆分函数strtok