Re: why there is no variabel after &

Dear all,

           I have following code:

#include <stdio.h> // for printf
#include <SQLAPI.h> // main SQLAPI++ header

int main(int argc, char* argv[])
{
    SAConnection con; // create connection object

    try
    {
        // connect to database
        // in this example it is Oracle,
        // but can also be Sybase, Informix, DB2
        // SQLServer, InterBase, SQLBase and ODBC
        con.Connect(
            "test", // database name
            "tester", // user name
            "tester", // password
            SA_Oracle_Client);

        printf("We are connected!\n");

        // Disconnect is optional
        // autodisconnect will ocur in destructor if needed
        con.Disconnect();

        printf("We are disconnected!\n");
    }
    catch(SAException &x)
    {
        // SAConnection::Rollback()
        // can also throw an exception
        // (if a network error for example),
        // we will be ready
        try
        {
            // on error rollback changes
            con.Rollback();
        }
        catch(SAException &)
        {
        }
        // print error message
        printf("%s\n", (const char*)x.ErrText());
    }

    return 0;

}

What I don't understand is catch(SAException &) . Please notice that
the & is withou a name after it. So what does this (SAException &)
means?

Thanks