C / C++ / MFC

yu-jian wrote:

There is a variable without name?

#include <iostream>
using std::cout;
using std::endl;

class A
{
public:
    A(){cout << "ctor" << endl;}
    ~A(){cout << "dtor" << endl;}
};

int main()
{
    A();
}

vector <A> v;
v.push_back(A());

yu-jian wrote:

why the c plus plus allow defining a variable without name?

CTempLock Lock(&(this->m_Lock));

void ProcessLock(const CTempLock & TempLock)
{
  // do stuff to TempLock here....
}

ProcessLock(CTempLock(&(this->m_Lock)));