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  1. #include <iostream>
  2. #include <fstream>
  3. #include <cctype>
  4. #include <map>
  5. #include <cstring>
  6. #include <string>
  7. #include <algorithm>
  8.  
  9. int main(int argc, char* argv[])
  10. {
  11. 	setlocale(LC_ALL, "");
  12.  
  13. 	if (argc == 1)
  14. 	{
  15. 		std::cout << "Не введен аргумент командной строки!" << std::endl;
  16. 		return 1;
  17. 	}
  18. 	std::ifstream fin(argv[1]);
  19.  
  20. 	if (!fin.is_open())
  21. 	{
  22. 		std::cout << "Не удалось открыть файл!" << std::endl;
  23. 		return 1;
  24. 	}
  25.  
  26. 	std::string str;
  27.  
  28. 	const char *delimit = ".,!?1234567890-=+#% \t";
  29.  
  30. 	std::map<std::string, size_t> words;
  31.  
  32. 	while (std::getline(fin, str))
  33. 	{
  34. 		for (std::string::size_type pos = 0; (pos = str.find_first_not_of(delimit, pos)) != std::string::npos;)
  35. 		{
  36. 			std::string::size_type n = pos;
  37. 			pos = str.find_first_of(delimit, pos);
  38. 			std::string word = str.substr(n, pos == std::string::npos ? pos : pos - n);
  39.  
  40. 			for (char &c : word)
  41. 				c = std::tolower((unsigned char)c);
  42.  
  43. 			++words[word];
  44. 		}
  45. 	}
  46. 	fin.close();
  47.  
  48. 	std::map<std::string, size_t>::iterator it;
  49. 	for (it = words.begin(); it != words.end(); ++it)
  50. 	{
  51. 		std::cout << (it->first.c_str()) << " - " << it->second << std::endl;
  52. 	}
  53.  
  54. 	return 0;
  55. }
Runtime error #stdin #stdout 0s 3468KB
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stdin
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Standard input is empty
stdout
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Не введен аргумент командной строки!
https://ideone.com/Ilh3wh
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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