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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int& f( int& v )
  5. {
  6.     v *= 2;
  7.     return v;
  8. }
  9.  
  10. int main() {
  11.  
  12.    int i = 10;
  13.    f(i) = f(i) + 42;
  14.    cout << "i=" << i << endl;
  15.  
  16.    int j = 10;
  17.    f(j) += 42;
  18.    cout << "j=" << j << endl;    
  19.  
  20.    return 0;
  21. }
Success #stdin #stdout 0s 2852KB
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stdin
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Standard input is empty
stdout
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i=82
j=62
https://ideone.com/BlrOGq
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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