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  1. #include <iostream>
  2. //#include <vector>
  3. #include <set>
  4. #include <string>
  5.  
  6. class C {
  7. private:
  8.   int seq;
  9.   std::string str;
  10. public:
  11.   C(int seq_, std::string str_) : seq(seq_), str(str_) {};
  12.   friend std::ostream &operator<<(std::ostream &s, std::set<C>::const_iterator p) { s << p->seq << ":" << p->str << std::endl; return s; }
  13.   friend bool operator<(C const &a, C const &b) { return a.str < b.str; }
  14. };
  15.  
  16. int main() {
  17.   std::set<C> v;
  18.   v.insert(C(31, "Illinois"));
  19.   v.insert(C(41,"Wisconsin"));
  20.   v.insert(C(59, "Missouri"));
  21.   v.insert(C(26, "California"));
  22.   v.insert(C(53, "Nevada"));
  23.   v.insert(C(58, "Arkansas"));
  24.   v.insert(C(97, "West Virginia"));
  25.  
  26.   for (std::set<C>::const_iterator p = v.begin(); p != v.end(); p++) {
  27.     std::cout << p;
  28.   }
  29.   return 0;
  30. }
  31.  
  32. /* end */
  33.  
Success #stdin #stdout 0.01s 5492KB
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stdin
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Standard input is empty
stdout
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58:Arkansas
26:California
31:Illinois
59:Missouri
53:Nevada
97:West Virginia
41:Wisconsin
https://ideone.com/Yc0YvT
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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