C语言使用正则表达式

1 #include<stdio.h>
2 #include<sys/types.h>
3 #include<regex.h>
4 #include<memory.h>
5 #include<stdlib.h>
6
7 int main(){
8
9 char *bematch = "hhhericchd@gmail.com";
10 char *pattern = "h{3,10}(.*)@.{5}.(.*)";
11 char errbuf[1024];
12 char match[100];
13 regex_t reg;
14 int err,nm = 10;
15 regmatch_t pmatch[nm];
16
17 if(regcomp(&reg,pattern,REG_EXTENDED) < 0){
18 regerror(err,&reg,errbuf,sizeof(errbuf));
19 printf("err:%s ",errbuf);
20 }
21
22 err = regexec(&reg,bematch,nm,pmatch,0);
23
24 if(err == REG_NOMATCH){
25 printf("no match ");
26 exit(-1);
27 }else if(err){
28 regerror(err,&reg,errbuf,sizeof(errbuf));
29 printf("err:%s ",errbuf);
30 exit(-1);
31 }
32
33 for(int i=0;i<10 && pmatch[i].rm_so!=-1;i++){
34 int len = pmatch[i].rm_eo-pmatch[i].rm_so;
35 if(len){
36 memset(match,'