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  1. #include<set>
  2. #include<iostream>
  3. using namespace std;
  4.  
  5. struct comp__f {
  6.     bool operator() (const pair<double, int>& lhs, const pair<double, int>& rhs) const{
  7.         return (lhs.second != rhs.second) && (lhs.first < rhs.first);
  8.     }
  9. };
  10.  
  11. int main()
  12. {
  13.     set<pair<double, int>, comp__f> s;
  14.     s.insert(make_pair(10.234, 1));
  15.     s.insert(make_pair(20.123, 2));
  16.     s.insert(make_pair(10.2, 1));
  17.     s.insert(make_pair(30.33, 3));
  18.     s.insert(make_pair(20.123, 1));
  19.  
  20.     for(auto entry : s)
  21.         cout <<  entry.first << " - " << entry.second << endl;
  22.  
  23.     return 0;
  24. }
Success #stdin #stdout 0s 4336KB
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stdin
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Standard input is empty
stdout
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10.234 - 1
20.123 - 2
30.33 - 3
https://ideone.com/u9QP66
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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