Help with Email Validation

This is what I have so far. This isn't working and this isn't even close to working. I'm not that experienced at C++ so I was hoping that someone would help me please. The assignment is basically to write a code to validate an email address to see what characters are allowed and what characters aren't allowed. Please help in anyway possible.

Thank you.


// reading a text file
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int spc_email_isvalid(const char *address) {
int count = 0;
const char *c, *domain;
static char *specialchars = "()<>@,;:\\\"[]";

// validate the name portion (name@domain)
for (c = address; *c; c++) {
if (*c == '\"' &amp;&amp; (c == address || *(c - 1) == '.' || *(c - 1) ==
'\"')) {
while (*++c) {
if (*c == '\"') break;
if (*c == '\\' &amp;&amp; (*++c == ' ')) continue;
if (*c < ' ' || *c >= 127) return 0;
}
if (!*c++) return 0;
if (*c == '@') break;
if (*c != '.') return 0;
continue;
}
if (*c == '@') break;
if (*c <= ' ' || *c >= 127) return 0;
if (strchr(specialchars, *c)) return 0;
}
if (c == address || *(c - 1) == '.') return 0;

// validate the domain portion (name@domain)
if (!*(domain = ++c)) return 0;
do {
if (*c == '.') {
if (c == domain || *(c - 1) == '.') return 0;
count++;
}
if (*c <= ' ' || *c &>= 127) return 0;
if (strchr(specialchars, *c)) return 0;
} while (*++c);

return (count >= 1);
}

*/

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That code is unreadable as posted

Checking what is allowed is easier then checking what isn't allowed.

Quote:

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Originally Posted by help123456789

This is what I have so far. This isn't working and this isn't even close to working. I'm not that experienced at C++ so I was hoping that someone would help me please. The assignment is basically to write a code to validate an email address to see what characters are allowed and what characters aren't allowed. Please help in anyway possible.

Thank you.

---

If you're using VS2008, you can download the feature pack which includes TR1 regular expressions. Which means you can pretty much use any email-validation regular expression found on the web (there are plenty) and use it in C++.

http://www.microsoft.com/downloads/d...displaylang=en