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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. double & foo()
  5. {
  6.     double n = 12.4;
  7.     double &ref = n;
  8.     return ref;
  9. }
  10.  
  11. double * foo2()
  12. {
  13. 	double n = 12.4;
  14.     double *ref = &n;
  15.     return ref;
  16. }
  17.  
  18. double foo3()
  19. {
  20. 	double n = 12.4;
  21. 	return n;
  22. }
  23.  
  24. int main()
  25. {
  26. 	  double x = foo();
  27. 	  cout << x << endl;
  28.  
  29. 	  double *y = foo2();
  30. 	  x = *y;
  31. 	  cout << x << endl;
  32.  
  33. 	  x = foo3();
  34. 	  cout << x << endl;
  35.  
  36. 	  return 0;
  37. }
Success #stdin #stdout 0s 3140KB
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stdin 
Standard input is empty
stdout 
0
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12.4
https://ideone.com/P8Nv6C
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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