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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int globalVal = 5;
  5.  
  6. int m1(int *&p)
  7. {
  8. 	p = &globalVal;	
  9. }
  10.  
  11. int m2(int *p)
  12. {
  13. 	p = &globalVal;	
  14. }
  15.  
  16.  
  17. int main() {
  18.  
  19. 	int *p = NULL;
  20.  
  21. 	m2(p);
  22.  
  23. 	if(!p)
  24. 		cout << "NULL 1" << endl;
  25. 	else
  26. 		cout << "NOT NULL 1" << endl;
  27.  
  28. 	m1(p);
  29.  
  30. 	if(!p)
  31. 		cout << "NULL 2" << endl;
  32. 	else
  33. 		cout << "NOT NULL 2" << endl;
  34.  
  35.  
  36. 	return 0;
  37. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
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Standard input is empty
stdout
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NULL 1
NOT NULL 2
https://ideone.com/L2NsXu
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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