関連ワード:  how to define 2d array in cpp    how to declare 2d array in cpp    how to initialize 2d array in cpp    how to declare multidimensional array in cpp    how to declare 2d array in c++    how to initialize 2d array in c++    how to initialize 2d array in c++ with 0    how to define 2d matrix in c++    how to declare 2d array in function c++    how to declare a 2d array in c++ dynamically