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Tip of the Day
Language: C++
Expertise: All
Apr 20, 1999

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Properties of Static Storage

Global objects, static data members of a class, namespace variables, and static variables in functions reside in static memory. Static objects are allocated by the linker and their address remains the same throughout the program's execution. Every static object is constructed only once during the lifetime of the program. By default, static data are initialized to binary zeroes. Static objects are subsequently initialized by their constructors. Here are some examples of variables with static storage:
 
int num; //global variables have static storage 

int func()
{ 
  static calls; //initialized to 0 by default
  return ++calls;
}

class C
{
private:
  static bool b;
};

namespace NS
{
  std::string str; //str has static storage
}
Danny Kalev
 
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