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  1. #include <algorithm>
  2. #include <cstring>
  3. #include <iostream>
  4. #include <string>
  5.  
  6. const char default_disallowed[] = {
  7. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  8. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  9. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1,
  10. 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
  11. 	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  12. 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0,
  13. 	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  14. 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
  15. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  16. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  17. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  18. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  19. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  20. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  21. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  22. 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
  23. };
  24.  
  25. void remove_disallowed(std::string &str, const char *lookup = default_disallowed)
  26. {
  27. 	str.erase(std::remove_if(str.begin(), str.end(), [&](char c) {
  28. 		return lookup[static_cast<unsigned char>(c)];
  29. 	}), str.end());
  30. }
  31.  
  32. // make disallow table from complement of "good" character string
  33. void make_disallowed(const std::string &str, char *lookup) // lookup[256]
  34. {
  35. 	memset(lookup, 1, 256);
  36. 	for (unsigned char c : str) {
  37. 		lookup[c] = 0;
  38. 	}
  39. }
  40.  
  41. int main()
  42. {
  43. 	char table[256];
  44. 	make_disallowed("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-", table);
  45.  
  46. 	std::string str;
  47. 	while (std::getline(std::cin, str)) {
  48. 		//remove_disallowed(str);
  49. 		remove_disallowed(str, table);
  50. 		std::cout << str << '\n';
  51. 	}
  52. }
  53.  
Success #stdin #stdout 0s 3436KB
comments (?)
stdin 
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~
stdout 
-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz
https://ideone.com/y8EgC1
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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