Cours:PointeursCpp : Différence entre versions

De troyesGEII
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Ligne 14 : Ligne 14 :
  
 
   cout << &n1 << " " << n2 << " " << &n3 << " " << n4 << endl;
 
   cout << &n1 << " " << n2 << " " << &n3 << " " << n4 << endl;
   cout << n1 << " " << *n2 << " " << n3 << " " << *n4 << endl;
+
   cout << n1 << " " << *n2 << " " << n3 << " " << *n4 << endl; // crash du programme
  
 
   n2 = &n1;
 
   n2 = &n1;

Version du 22 septembre 2022 à 07:39

Analyse de code

Question.jpg Simuler le fonctionnement de ce programme :

int main()
{
  int n1=10;
  int *n2=nullptr;
  int n3=20;
  int *n4=nullptr;

  cout << &n1 << " " << n2 << " " << &n3 << " " << n4 << endl;
  cout << n1 << " " << *n2 << " " << n3 << " " << *n4 << endl;  // crash du programme

  n2 = &n1;
  n4 = n2;
 
  cout << &n1 << " " << n2 << " " << &n3 << " " << n4 << endl;
  cout << n1 << " " << *n2 << " " << n3 << " " << *n4 << endl;

  

}