Namespace and Temmplate function

[Lost User]

Friends, I wrote a simple template function, the purpose was to convert a "string" to "number" (just like atoi function). My function is:

namespace CP
{
template < class T >
T ToNum(std::string &strNum)
{
T num=0;

	std::stringstream strm ( strNum );

	strm >> num;

	return num;

}

}

As you can see above, the function ToNum is present inside a namespace. In order to use this function in the main program, there are three methods to deal with namespaces. First method is:

using namespace CP;
std::string strNum=_T("44");
std::cout << ToNum(strNum)

The above method is working fine in which i initially used using namespace CP before anything else. There is second method which is also working for me. Instead of using using namespace CP, i am directly calling the function ToNum as: CP::ToNum(strNum) But the third method is not working for me what i am doing is:

using CP::ToNum;
ToNum<_int64>(strNum);

But strangely it is not working and compiler is giving me horrible STL errors like, c:\test\test.cpp(32): error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'overloaded-function' (or there is no acceptable conversion) Please tell me what is the problem ?????

[Brigsoft]

Try this #include int main(int argc, char* argv[]) { _int64 a = 10; std::cout << a << std::endl; return 0; } in my system it is not working too. Probably, the broble is in _int64, not in yor function. ================================ Useful links