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  1. #include <iostream>
  2. #include <sstream>
  3. using namespace std;
  4.  
  5. void log(ostream& o) {
  6. 	stringstream* s = dynamic_cast<stringstream*>(&o);
  7. 	if (s) {
  8. 	    cout << s->str() << endl;
  9. 	}
  10. }
  11.  
  12. int main() {
  13. 	int x = 5, y = 6;
  14. 	log(stringstream() << "x=" << x << ", y=" << y);
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 3472KB
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stdin
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Standard input is empty
stdout
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x=5, y=6
https://ideone.com/wQW0ib
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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