test.c

这是个人脸识别程序

// $extern\test.c 1.5 milbo$ test.c: test gnu regexp
// Warning: this is raw research code -- expect it to be quite messy.

#include <stdlib.h>
#include <stdio.h>
#include "config.h"
#include "regex.h"

static char *string = "abc";
static char *pattern = "C$|x";	// will match case insensitive "C$" on final "c" in "abc"

int __cdecl main (void)
{
int cflags = REG_EXTENDED|REG_ICASE|REG_NOSUB;	/* egrep style expression, ignore case, simple failure reporting in regexec */
int i;
regex_t preg;

printf("pattern %s string %s: ", pattern, string);
i = regcomp(&preg, pattern, cflags);
if (i)
	printf("regcomp failed, returned %d\n", i);
else
	{
    regmatch_t pmatch[1];
	i = regexec(&preg, string, 0, pmatch, 0);
	printf("%s\n", i == 0? "match": "no match");
	regfree(&preg);
	}
return 0;
}