Setting all elements of an array of pointers to nullptr in C++

Question

I am just wondering if there is a way of setting an initialized array of pointers to all null values without using a loop?

class Abc{
  //An array of 2000 Product pointers
  Product* product_[2000];
      public:
         Abc();
}

I want to set all pointers to null when the constructor is called:

Abc::Abc(){
    product_ = {};
}

This does not work, product_ must be a modifiable value. Is there an easier way than looping 2000 elements?

Thanks.

Jarod42 · Accepted Answer · 2017-08-16 00:20:04Z

3

You may use:

class Abc{
  //An array of 2000 Product pointers
  Product* product_[2000];
      public:
         Abc() : product_{} {}
};

answered Aug 16, 2017 at 0:20

Jarod42

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Comments

Robinson · Accepted Answer · 2017-08-16 00:33:24Z

2

If you use std::array they'll be initialised to nullptr by default.

std::array<Product *, 2000> product;

answered Aug 16, 2017 at 0:33

Robinson

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Amit Rastogi · Accepted Answer · 2017-08-16 08:03:14Z

0

With Visual Studio compiler you can initialize the pointers to NULL in the initializer list like below-

class Abc{
  //An array of 2000 Product pointers
  Product* product_[2000];
      public:
         Abc():product_(){};
}

answered Aug 16, 2017 at 8:03

Amit Rastogi

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