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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int& f( int& v )
  5. {
  6.     cout << "f()" << v << endl;
  7.     v *= 2;
  8.     return v;
  9. }
  10.  
  11. int main() {
  12.  
  13.    int i = 10;
  14.    //f(i) = f(i) + 42;
  15.    int ii = 20;
  16.    f(ii) = f(i) + 42;
  17.    cout << "i=" << i << endl;
  18.  
  19.    int j = 10;
  20.    f(j) += 42;
  21.    cout << "j=" << j << endl;    
  22.  
  23.    // system( "pause" );
  24.  
  25.    return 0;
  26. }
Success #stdin #stdout 0s 2896KB
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stdin
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Standard input is empty
stdout
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f()20
f()10
i=20
f()10
j=62
https://ideone.com/bi1xso
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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