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  1. #include <iostream>
  2. #include <set>
  3. #include <algorithm>
  4. #include <iterator>
  5. #include <fstream>
  6.  
  7. using namespace std;
  8.  
  9. void readSet(set<int>& v, istream_iterator<int>& input) {
  10.     int size = *input++;
  11.     while (size--) {
  12.         v.insert(*input++);
  13.     }
  14. }
  15.  
  16. int main() {
  17.     ifstream file("plik.txt");
  18.     if (!file.is_open()) {
  19.         return 1;
  20.     }
  21.  
  22.     istream_iterator<int> input(file);
  23.     set<int> a, b;
  24.     readSet(a, input);
  25.     readSet(b, input);
  26.  
  27.     set<int> intersection;
  28.     set_intersection(
  29.         a.begin(), a.end(),
  30.         b.begin(), b.end(),
  31.         inserter(intersection, intersection.end())
  32.     );
  33.  
  34.     cout << "Ilosc powtarzajacych sie: " << intersection.size() << "\n";
  35.     cout << "Liczby:\n";
  36.     copy(
  37.         intersection.begin(),
  38.         intersection.end(),
  39.         ostream_iterator<int>(cout, "\n")
  40.     );
  41.     return 0;
  42. }
Runtime error #stdin #stdout 0s 2984KB
comments (?)
stdin
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4

11 22 33 44

3

11 222 22
stdout
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Standard output is empty
https://ideone.com/tBuWLX
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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