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  1. #include <iostream>
  2. #include <sstream>
  3. #include <string>
  4. #include <map>
  5.  
  6. using namespace std;
  7.  
  8. string getFileData()
  9. {
  10.     string data;
  11.  
  12.     data += "6\n";
  13.  
  14.     data += "b\n"; data += "Second Letter in the Alphabet (Rhymes with 'Bee')\n";
  15.     data += "a\n"; data += "The first letter in the alphabet (Vowel)\n";
  16.     data += "why\n"; data += "Why what?\n";
  17.     data += "why?\n"; data += "Why what?\n";
  18.     data += "hello\n"; data += "Hello!\n";
  19.     data += "hi\n"; data += "Hello!\n";
  20.  
  21.     return data;
  22. }
  23.  
  24. int main()
  25. {
  26.     // let's pretend this is our file
  27.     stringstream file(getFileData());
  28.  
  29.     int n;
  30.  
  31.     file >> n; // get number of entries
  32.     file.get(); // ignore newline
  33.  
  34.     map<string, string> dataMap;
  35.  
  36.     for (int i = 0; i < n; ++ i)
  37.     {
  38.         string key, value;
  39.  
  40.         getline(file, key);
  41.         getline(file, value);
  42.  
  43.         dataMap[key] = value;
  44.     }
  45.  
  46.     // no need to sort. map
  47.     // sorts automatically by key
  48.  
  49.     string input;
  50.  
  51.     while (true)
  52.     {
  53.         getline(cin, input);
  54.  
  55.         if (input.empty()) break; // empty line == quit
  56.  
  57.         // make everything lowercase
  58.         for (int i = 0; i < input.length(); ++ i)
  59.             if (input[i] >= 'A' && input[i] <= 'Z')
  60.                 input[i] += 'a' - 'A';
  61.  
  62.         // if the key exists, print the respective value
  63.         if (dataMap.find(input) != dataMap.end())
  64.             cout << dataMap[input] << endl;
  65.         // otherwise, print an error message
  66.         else cout << "Sorry, I don't understand..." << endl;
  67.     }
  68. }
Not running #stdin #stdout 0s 0KB
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stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/Vz9oh
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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