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  1. #include<iostream> 
  2. using namespace std;
  3. /* such a function will not be safe if x is non static variable of it */
  4. int &fun()
  5. {
  6.     static int x; 
  7.     return x;
  8. }    
  9.  
  10. int main()
  11. {
  12.     fun() = 10;
  13.     /* this line prints 10 on screen */
  14.     printf(" %d ", fun());
  15.     getchar();
  16.     return 0;
  17. }
Success #stdin #stdout 0s 3464KB
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stdin
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Standard input is empty
stdout
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 10
https://ideone.com/XbQmwv
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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