A local variable is initialized each time its block is entered : function scope variables « Function « C++ Tutorial

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C++ Tutorial » Function » function scope variables

7.15.2.A local variable is initialized each time its block is entered

#include <iostream> 

using namespace std; 

 

void f(); 

 

int main() 

{ 

   

  for(int i=0; i < 3; i++) f(); 

   

  return 0; 

} 

 

// num is initialized each time f() is called. 

void f() 

{ 

  int num = 99; 

 

  cout << num << "\n"; 

 

  num++; // this has no lasting effect 

}

99
99
99

7.15.function scope variables
	7.15.1.	Function level variable
	7.15.2.	A local variable is initialized each time its block is entered

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