小弟试图通过vector类来定义一矩阵,定义过程如下:
template <typename T>
class Matrix{
      typedef Matrix<T> MYT;
      public:
            Matrix(){};
            Matrix(int r1,int j1);
            T& operator ()(int row,int line);
            const T operator ()(int row,int line) const;
            int get_row(const MYT&);
            int get_line(const MYT&);
            MYT operator +(MYT& temp1,MYT& temp2);
      private:
            int nr,nc;
            vector<vector<T> > mat;
};
经过编译,结果提示错误如下:
14 D:\Program Files\DEV-CPP\WORK\matrix\matrix3.h `Matrix<T> Matrix<T>::operator+(Matrix<T>&, Matrix<T>&)' must take either zero or one argument

17 D:\Program Files\DEV-CPP\WORK\matrix\matrix3.h ISO C++ forbids declaration of `vector' with no type
改了很多次,都没有搞清楚问题在哪,希望达人帮帮忙

按照达人的指点,又仔细看了一下书,将+运算付改成了友元函数,如下
class Matrix{
      typedef Matrix<T> MYT;
      friend MYT operator+(MYT& ,MYT&);
      public:
            Matrix(){};
            Matrix(int r1,int j1);
            T& operator ()(int row,int line);
            const T operator ()(int row,int line) const;
            int get_row(const MYT&);
            int get_line(const MYT&);
      public:
            int nr,nc;
            vector<T > mat;
};
  结果编译还是有问题:

7 D:\Program Files\DEV-CPP\WORK\matrix\matrix3.h [Warning] friend declaration `Matrix<T> operator+(Matrix<T>&, Matrix<T>&)' declares a non-template function
17 D:\Program Files\DEV-CPP\WORK\matrix\matrix3.h ISO C++ forbids declaration of `vector' with no type
再请问一下达人上述问题怎么搞....