school

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regex.c (285B)

      1 #include <stdlib.h>
      2 #include <regex.h>
      3 #include <stdio.h>
      4 
      5 void eprint(char *msg){
      6 fprintf(stderr, "%s\n", msg);
      7 exit(1);
      8 }
      9 
     10 int main(){
     11 regex_t expr;
     12 if (regcomp(&expr, "(1|0)+", 0) != 0) eprint("regcomp failed!");
     13 int ret = regexec(&expr, "1010", 0, NULL, 0);
     14 printf("%d\n", ret);
     15 }