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  1. #include <list>
  2. #include <string>
  3. #include <iostream>
  4. struct Point {
  5.     std::string name;
  6. };
  7. int main()
  8. {
  9.     std::list<Point> _pointList{{"foo"}, {"bar"}, {"baz"}};
  10.     if(_pointList.size() > 1)
  11.     {
  12.         std::list<Point>::iterator itr;
  13.         std::list<Point>::iterator itr2;
  14.  
  15.         for(itr = _pointList.begin(); itr != _pointList.end(); itr++)
  16.         {
  17.             //set the second iterator to the next Point in the list.
  18.             itr2 = itr;
  19.             itr2++;
  20.             if(itr2 == _pointList.end())
  21.                itr2 = _pointList.begin();
  22.  
  23.             std::cout << "The first point's name is: " << itr->name << '\n'
  24.                       << "The second point's name is: " << itr2->name << '\n';
  25.         }
  26.     }
  27. }
  28.  
Success #stdin #stdout 0s 2984KB
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stdin
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Standard input is empty
stdout
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The first point's name is: foo
The second point's name is: bar
The first point's name is: bar
The second point's name is: baz
The first point's name is: baz
The second point's name is: foo
https://ideone.com/9QYu2G
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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