C++

The copy assignment operator must clean up the data members of the assignment's target (and correctly handle self-assignment).

The copy constructor assigns values to uninitialized data members.

For example:

My_Array first;           // initialization by default constructor
My_Array second(first);   // initialization by copy constructor
My_Array third = first;   // Also initialization by copy constructor
second = third;           // assignment by copy assignment operator

Integer sizes on 64 bit operating systems:

• short is 16 bits
• int is 32 bits
• long is ?? bits
  • 32 on windows (LLP64)
  • 64 on unix, mac (LP64)
• long long is 64 bits
• prt/size_t is 64 bits