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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
comments (?)
stdin 
Standard input is empty
stdout 
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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