passing variables by reference

I'm writing a winsock function that call's recv(). Since the recv() function directly changes the variable directly, and uses the return value for something else, I need the user of the function to be able to create a variable, pass it to my function, then use the variable after it has been changed. However, I'm not sure how I could do this. What I have so far is similar to this:

Code:

---

INT MyFunc(CHAR *&mybuff)
{
INT iRecv = recv(socket, mybuff, strlen(mybuff), 0);
}

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There's more code that makes the function more intricate, but that's the only part where I need to send a pointer to a buffer to the recv() function. Am I passing the variable to my function the right way? Basically, what I'm aiming for is so I can do something like this:

Code:

---

char *buff="";
if (MyFunc(buff) == 0)
{
printf(buff); //display the changed data;
}

---

Thanks for any help

Code:

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INT MyFunc(CHAR * mybuff) //Without the ampersand
{
INT iRecv = recv(socket, mybuff, strlen(mybuff), 0);
}

---

Thanks for the answers.

vVv: The function I'm using involves a little more than just that. I was just having problems with changing the buffers around and such. Thanks for the help.