c++ initialize 2d array of pointers with null?

Question

class A {
   private:
      B* my2DArray[max1][max2];
};

How to initialize my2DArray with NULL here?

Johannes Schaub - litb · Accepted Answer · 2011-05-29 17:19:18Z

5

Define your own constructor that value initializes the array, setting all of its elements to null pointers. That's done by providing () initializer for the member, which also works for arrays.

class A
{
public:
  A():my2DArray() { }
private:
  B* my2DArray[max1][max2];
};

answered May 29, 2011 at 17:19

Johannes Schaub - litb

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ralphtheninja · Accepted Answer · 2011-05-29 17:19:12Z

2

You could use memset:

memset(&my2DArray, 0, max1*max2*sizeof(B*));

answered May 29, 2011 at 17:19

ralphtheninja

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