Subtotal of c Regular Expression matching

Reference address:

IBM manual http://publib.boulder.ibm.com/infocenter/iseries/v7r1m0/index.jsp? Topic=%2frtref%2fregcomp.htm

Books http://book.douban.com/subject/3794240/

Csdn read http://blog.csdn.net/wwwljc/article/details/6159644

C ++ 11 regular http://www.cnblogs.com/yejianfei/archive/2012/10/07/2713715.html

Match several regular expressions (email, IPv4:

# Include <sys/types. h> # Include <RegEx. h> # Include <Stdio. h> Int Main ( Int Argc, Char * Argv []) {regex_t RegEx; Int  Reti;  Char Msgbuf [ 100  ];  Const   Char * Reg_exp = "  ^ \ W + ([-+.] \ W +) * @ \ W + ([-.] \ W + )*\\. \ W + ([-.] \ W +) * $  "  ;
// IPv4'^ (25 [0-5] | 2 [0-4] [0-9] | 1 [0-9] [0-9] | [1-9] [0-9] | [0-9]) \\.) {3} (25 [0-5] | 2 [0-4] [0-9] | 1 [09] [0-9] | [1-9] [0 -9] | [0-9]) $'
  /*  Compile Regular Expression */  RETI = Regcomp (& RegEx, reg_exp, reg_extended );  If (RETI) {fprintf (stderr, "  Cocould not compile RegEx \ n  " ); Exit ( 1  );}  /*  Execute Regular Expression  */  RETI = Regexec (& RegEx, " Wangkangluo1@136.com  " , 0 , Null, 0  );  If (! RETI) {puts (  "  Match  "  );}  Else   If (RETI = Reg_nomatch) {puts (  " No match  "  );}  Else  {Regerror (RETI, & RegEx, msgbuf, Sizeof  (Msgbuf); fprintf (stderr,  "  RegEx match failed: % s \ n  "  , Msgbuf); exit (  1  );}  /* Free compiled regular expression if you want to use the regex_t again  */  Regfree ( & RegEx );  Return   0  ;} 

 

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