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  1.  #include <sys/types.h>
  2.   #include <regex.h>
  3.   #include <stdio.h>
  4.  
  5.  
  6.    int main(int argc, char *argv[]){ regex_t regex;
  7.         int reti;
  8.         char msgbuf[100];
  9.  
  10.         /* Compile regular expression */
  11.         reti = regcomp(&regex, "^[[:xdigit:]]\\{2\\}$", 0);
  12.         if( reti ){ fprintf(stderr, "Could not compile regex\n"); return(1); }
  13.  
  14.         /* Execute regular expression */
  15.         reti = regexec(&regex, "ab", 0, NULL, 0);
  16.         if( !reti ){
  17.                 puts("Match");
  18.         }
  19.         else if( reti == REG_NOMATCH ){
  20.                 puts("No match");
  21.         }
  22.         else{
  23.                 regerror(reti, &regex, msgbuf, sizeof(msgbuf));
  24.                 fprintf(stderr, "Regex match failed: %s\n", msgbuf);
  25.                 return 1;
  26.         }
  27.  
  28.        /* Free compiled regular expression if you want to use the regex_t again */
  29.         regfree(&regex);
  30.  
  31.         return 0;
  32. }
Success #stdin #stdout 0s 2184KB
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Standard input is empty
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Match
https://ideone.com/x7vlIO
language:
C (gcc 8.3)
created:
10 years ago
visibility:
secret

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