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  1. #include <iostream>
  2. #include <sstream>
  3. #include <fstream>
  4. #include <string>
  5. #include <cctype>
  6.  
  7. void output_line(std::ostream& _out, std::istream& _in, int cnt = 2){
  8. 	int n;
  9. 	std::string::const_iterator i;
  10. 	std::string s;
  11. 	while(std::getline(_in, s) && ! _in.fail()){
  12. 		n = 0;
  13. 		i = s.begin();
  14. 		do {
  15. 			if(std::isdigit(*i))
  16. 				++n;
  17. 			else {
  18. 				if(n == cnt){
  19. 					_out << s << std::endl;
  20. 					break;
  21. 				}
  22. 				n = 0;
  23. 			}
  24. 		} while(i++ != s.end());
  25. 	}
  26. 	_out.flush();
  27. }
  28.  
  29.  
  30. int main(void) {
  31. 	char s[] = "bla-abc 9 678\nbla-bla 12\nabcdef\nthe {77} fin\n10-off";
  32. 	std::istringstream sp(s);
  33. 	output_line(std::cout, sp);
  34.  
  35. /*  ввод из файлом
  36. 	std::ifstream fp("file.txt");
  37. 	output_line(std::cout, fp);
  38. 	fp.close();
  39. */
  40. 	return 0;
  41. }
Success #stdin #stdout 0s 3416KB
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stdin
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Standard input is empty
stdout
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bla-bla 12
the {77} fin
10-off
https://ideone.com/VC1aBy
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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