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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5.  
  6. string getFirstPart(const string& input)
  7. {
  8. 	static const char* whitespaces = "\t\n\v\f\r ";
  9. 	string::size_type begin = input.find_first_not_of(whitespaces);
  10. 	if(begin == string::npos)
  11. 		begin = 0;
  12. 	string result = input.substr(begin, input.find('#') - begin);
  13. 	string::size_type end = result.find_last_not_of(whitespaces);
  14. 	if(end != string::npos)
  15. 		result.erase(end + 1);
  16. 	return result;
  17. }
  18.  
  19.  
  20. int main()
  21. {
  22.     cout << '"' << getFirstPart("") << '"' << endl;
  23. 	cout << '"' << getFirstPart("abc") << '"' << endl;
  24. 	cout << '"' << getFirstPart(" a b c ") << '"' << endl;
  25. 	cout << '"' << getFirstPart("#") << '"' <<  endl;
  26. 	cout << '"' << getFirstPart(" #abc") << '"' << endl;
  27. 	cout << '"' << getFirstPart(" fo o #bar") << '"' << endl;
  28. 	cout << '"' << getFirstPart(" fo o#bar") << '"' << endl;
  29. 	cout << '"' << getFirstPart("fo o#") << '"' << endl;
  30. 	cout << '"' << getFirstPart("fo o #bar") << '"' << endl;
  31. 	cout << '"' << getFirstPart("\rfoo\n#bar#baz") << '"' << endl;
  32. }
Success #stdin #stdout 0.01s 2864KB
comments (?)
stdin
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Standard input is empty
stdout
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""
"abc"
"a b c"
""
""
"fo o"
"fo o"
"fo o"
"fo o"
"foo"
https://ideone.com/XTakR
language:
C++ (gcc 8.3)
created:
14 years ago
visibility:
public

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