retrive username and domain with GetUserNameExA

Question

I am trying to get username and domain with GetUserNameExA function

this is my code

 #include <windows.h>
#include <Lmcons.h>
#include <iostream>
using namespace std;

#include <windows.h>
#include <Lmcons.h>
#include <Security.h>
#include <secext.h>


DWORD main()
{
    
        CHAR  *username = [200];
        DWORD dwSize = 199;
        memset(username, 0x00, 200);
        GetUserNameExA(NameSamCompatible, username, &dwSize);
        wcout << L"Hello, " << NameSamCompatible << L"!\n";
    

}

but keep getting an error that you need to declare an identifer

can you plz help me to figure it out?

First time in C++? I recommend [getting a good book](https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list) to help out. C++ rarely rewards guesswork and is not overly forgiving. — user4581301, Jul 09 '22 at 21:00
Just FYI, the buffer size you pass into `GetUserNameEx()` needs to include space for the null terminator, so you should be setting `dwSize` to 200, not 199. Otherwise, just set `dwSize` to 0 instead and let `GetUserNameEx()` tell you the necessary buffer size. — Remy Lebeau, Jul 09 '22 at 21:30
We'll take the love, but note that [Stack Overflow is not a forum](https://stackoverflow.com/tour). — user4581301, Jul 10 '22 at 01:21

score 1 · Accepted Answer · answered Jul 09 '22 at 20:54

1

CHAR  *username = [200];

should be this

char username[200];

And this

wcout << L"Hello, " << NameSamCompatible << L"!\n";

should be this

cout << "Hello, " << username << "!\n";

answered Jul 09 '22 at 20:54

john

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Thank you john! much appreciated it! Really trying to improve my coding skills. make some changes and now getting only one error which is ```LNK2001 unresolved external symbol GetUserNameExA``` any idea how to fix this – Chantal87 Jul 09 '22 at 21:09
1

@Chantal87 Read the documentation [GetUserNameExA](https://learn.microsoft.com/en-us/windows/win32/api/secext/nf-secext-getusernameexa) __Requirements__ Library: `Secur32.lib` – Richard Critten Jul 09 '22 at 21:17
1

Thank you all! I do not know how to say thank you! learned so much! and it is working :) – Chantal87 Jul 09 '22 at 21:22

retrive username and domain with GetUserNameExA

1 Answers1