#include <iostream>
#include <array>

using namespace std;

int main()
{
  char var1{6};

  cout << "chars have size " << sizeof(var1) << " bytes."<< endl;

  int var2{6};

  cout << "ints have size " << sizeof(var2) << " bytes."<< endl;

  double var3{6.234234};

  cout << "doubles have size " << sizeof(var3) << " bytes."<< endl;

  array <int, 5> intarray{1,2,3,4,5};

  cout << "int arrays of 5 elements have size " << sizeof(intarray) << " bytes."<< endl;

  int *pointer{nullptr};

  cout << "pointers have size " << sizeof(pointer) << " bytes."<< endl;

}