Using the sizeof operator for base class and derived class : sizeof « Operators statements « C++ Tutorial






  1. C++ Tutorial
  2. Operators statements
  3. sizeof
#include <iostream>
#include <ostream>

class base {};
class derived : public base {};

int main()
{
  using namespace std;
  cout << sizeof(base)  << '\n';      
  cout << sizeof(derived)  << '\n';   
  base b[3];
  
  cout << sizeof(b) << '\n';          
  derived d[5];
  cout << sizeof(d) << '\n';          
}

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3.6.sizeof
3.6.1.Demonstrate sizeof.
3.6.2.sizeof a union
3.6.3.sizeof a class
3.6.4.Object sizes
3.6.5.Using the sizeof operator for base class and derived class
3.6.6.Use sizeof operator on an array name: returns the number of bytes in the array