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  1. #include <string>
  2. #include <vector>
  3. #include <iostream>
  4. #include <sstream>
  5.  
  6. int main()
  7. {
  8. 	std::vector<int> numbers;
  9. 	std::string line;
  10.  
  11.     // ifstream myfile ("example.dat");
  12. 	std::istringstream myfile(
  13. 		"3\n"
  14. 		"12\n"
  15. 		"23\n"
  16. 		"34\n"
  17. 		"12 34\n"
  18. 		"12 12\n"
  19. 		"34 23\n"
  20. 		"23 23\n\n"
  21. 	);
  22.  
  23. 	while ( std::getline(myfile, line) )
  24. 	{
  25. 		try {
  26. 			int num = std::stoi(line) ;
  27. 			std::cout << "Converted \"" << line << "\" to " << num << '\n' ;
  28. 		}
  29. 		catch( std::exception& ex)
  30. 		{
  31. 			std::cout << "ERROR: " << ex.what() << '\n' ;
  32. 			std::cout << "\tUnable to convert \"" << line << "\" to a number.\n" ;
  33. 		}
  34. 	}
  35. }
Success #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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Converted "3" to 3
Converted "12" to 12
Converted "23" to 23
Converted "34" to 34
Converted "12 34" to 12
Converted "12 12" to 12
Converted "34 23" to 34
Converted "23 23" to 23
ERROR: stoi
	Unable to convert "" to a number.
https://ideone.com/X4UKyP
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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