C++ Array Size Initialization -


i trying define class. have:

enum tile { grass, dirt, tree  };  class board { public:     int toshow;     int tostore;     tile* shown;     board (int tsh, int tst);     ~board(); };  board::board (int tsh, int tst) {     toshow = tsh;     tostore = tst;     shown = new tile[tostore][tostore]; //error! }  board::~board () {     delete [] shown; }

however, following error on indicated line -- first dimension of allocated array can have dynamic size.

what want able rather hard code it, pass parameter toshow constructor , create two-dimensional array contains elements want shown.

however, understanding when constructor called, , shown initialized, size initialized current value of tostore. if tostore changes, memory has been allocated array shown , therefore size should not change. however, compiler doesn't this.

is there genuine misconception in how i'm understanding this? have fix want without having hard code in size of array?

use c++'s containers, that's they're there for.

class board { public:     int toshow;     int tostore;     std::vector<std::vector<tile> > shown;     board (int tsh, int tst) :        toshow(tsh), tostore(tst),        shown(tst, std::vector<tile>(tst))     {     }; };  ...      board board(4, 5);     board.shown[1][3] = dirt;

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