Thread: Simple regex to find word but not containing some other words

A regex may be overkill. Assuming line contains your string, and only one instance of "Test" can occur in the string, you could do this:

Code:

#include <string.h>  /* strstr() */
#include <ctype.h>   /* isalpha() */

char *p;

p = strstr(line, "Test");
if (p)
{
    if (!isalpha(*(p + 4)))
    {
        /* accepted */
    }
    else
    {
        /* rejected */
    }
}
else
{
    /* "Test" is not in this line */
}

I see. Well, the usual suspects are GNU regex's, POSIX.2 regex's, and my favorite, PCRE - Perl Compatible Regular Expressions. Which are you using?

It's most likely to be POSIX.2, I suppose. You could search for a tutorial: https://www.google.ca/search?q=examp...regex+tutorial
(That is, of course, just one search possibility. Try looking for "example"s, etc.)

Regular expressions are a topic unto themselves but definitely repay the effort to learn them.