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  1. #include <iostream>
  2. #include <sstream>
  3. #include <string>
  4.  
  5. void f(const char* p)
  6. {
  7. 	std::istringstream iss(p);
  8. 	int num;
  9. 	if (iss >> num)
  10. 	    std::cout << num << " (an int)\n";
  11. 	else
  12. 	{
  13. 		iss.clear(); // recover from parsing int failure above
  14. 		std::string word;
  15. 		if (iss >> word)
  16. 	        std::cout << word << " (a string)\n";
  17. 	}
  18. }	
  19.  
  20. int main()
  21. {
  22. 	f("five");
  23. 	f("35");
  24. }
Success #stdin #stdout 0s 3276KB
comments (?)
stdin
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Standard input is empty
stdout
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five (a string)
35 (an int)
https://ideone.com/mJAeTu
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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