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  1. #include <vector>
  2. #include <map>
  3. #include <string>
  4. #include <iostream>
  5. #include <stdexcept>
  6. #include <sstream>
  7. int main()
  8. {
  9.    std::multimap<std::string, std::string> m;
  10.    std::string s = "1-1-2-1,1-1-3-1,1-2-3-4,2-3-4-5,2-3-5-8";
  11.    std::stringstream ss(s);
  12.    for(std::string item; std::getline(ss, item, ','); )
  13.    {
  14.        std::stringstream ss2(item);
  15.        std::vector<std::string> tokens;
  16.        for(std::string tok; std::getline(ss2, tok, '-'); )
  17.            tokens.push_back(tok);
  18.        if(tokens.size() != 4)
  19.                throw std::runtime_error("parsing error at item " + item);
  20.        std::string key   = tokens[0] + '-' + tokens[1];
  21.        std::string value = tokens[2] + '-' + tokens[3];
  22.        m.insert(std::make_pair(key, value));
  23.    }
  24.    std::cout << "Key\tValue\n";
  25.    for(auto i = m.begin(); i!=m.end(); ++i)
  26.        std::cout << i->first << "\t" << i->second << '\n';
  27. }
  28.  
Success #stdin #stdout 0s 2972KB
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stdin
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Standard input is empty
stdout
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Key	Value
1-1	2-1
1-1	3-1
1-2	3-4
2-3	4-5
2-3	5-8
https://ideone.com/zy871
language:
C++14 (gcc 8.3)
created:
14 years ago
visibility:
public

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