"Cant read memory" error

[Cbomb]

This code works but retuns an error saying:
The instruction at "0x6f746172" referenced memory at "0x6f746172". The memory could not be "read".
(this error seems to occur at the very end of the code).

#include <windows.h>
#include <stdio.h>

int main()
{
	char s_username;
	unsigned long i_length;
	GetUserName (&s_username, &i_length);
	printf(&s_username);
	return 0;
}

Why is that?

[abdul]

It does not give me any error in vc++ but when I run it, it gives me some weird characters as the username

[Cbomb]

grrr....very weird...

I get: "Administrator" *error occurs here* "Press any key to exit"

[parksie]

You need to use a buffer:

#include <windows.h>
#include <stdio.h>

int main() {
    char pcUserName[100];
    unsigned long lLength = 100;
    GetUserName(pcUserName, &lLength);
    printf("%s\n", pcUsername);
    return 0;
}

[Cbomb]

Thank you VERY much