Question

        #include <vector>
        using namespace std;
        int main(){
        vector<double> one;

        one.size;
        return 0;
    }

.

 error C3867: 'std::vector<_Ty>::size': function call missing argument list; use '&std::vector<_Ty>::size' to create a pointer to member
1>          with
1>          [
1>              _Ty=std::vector<double>
1>          ]

I am using Visual Studio 2012. Any ideas what is causing those errors?

Answer 1

std::vector has no size member but it has size() member function.
you need to change one.size; to one.size();