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

看看基本c++,运算符重载为成员函数只要一个参数..还有大家都在stl...呵呵..这东西要好好看看

#include"vector"
using namespace std;
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& temp2);
      private:
            int nr,nc;
            vector<T> mat;
};

请问楼上STL要达到哪种程度看比较好。我只学了C++基本语法，现在学数据结构，也想多看一点书，但怕看不懂浪费时间。

越多越好...我一直都在看..反复看到熟悉...个人观点..如果你是学生会语法就可以了

成员函数本身还有个隐式的 *this
所以如果再加两个形参就多了

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....

#include<vector>
using namespace std;
template <typename T>
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;
};
好好看书..而且不要用 using namespace std;
有污染问题...

#include<vector>
using std::vector;
template <class T>
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;
};