自定义c++二维动态数组
template <class T> class myMat { public: myMat(int rows_,int cols_) { rows=rows_;cols=cols_; data=new T[rows*cols]; } T& at(int r,int c) { T &p=*(data+r*rows+c); return p; } T& operator ()(int r,int c){return *(data+r*rows+c);}//获取r行、c列值 T* operator [](int r){return (data+r*rows);}//获取第r行指针 int rows,cols; T * data; };