ProC 连接Oracle代码

int connectdb()
{
exec sql begin declare section;
char username[20];
char password[20];
char connect_string[20];
exec sql end declare section;

strcpy(username,"lbc1");
strcpy(password,"lbtux");
strcpy(connect_string, "lbc1");

exec sql connect :username identified by :password using :connect_string;
if ( sqlca.sqlcode < 0 )
{
return -1;
}
}