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  1. #include <iostream>
  2. #include <algorithm>
  3.  
  4. struct Pair {
  5. 	int first; int second;
  6. };
  7. bool compare(const Pair &p1, const Pair &p2) { return p1.first < p2.first; }
  8.  
  9. int main() {
  10. 	int N=5;
  11. 	int data[10]= {1,2,7,8,13,14,10,11,4,5};
  12. 	Pair *pairs = (Pair *)data;
  13.  
  14. 	std::cout << "unsorted" << std::endl;
  15. 	for(int i=0; i<N; ++i)
  16. 		std::cout << i << ": (" << pairs[i].first << ", " << pairs[i].second << ")" << std::endl;
  17.  
  18. 	std::sort(pairs, pairs+N, compare);
  19.  
  20. 	std::cout << "sorted" << std::endl;
  21. 	for(int i=0; i<N; ++i)
  22. 		std::cout << i << ": (" << pairs[i].first << ", " << pairs[i].second << ")" << std::endl;
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 3300KB
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stdin
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Standard input is empty
stdout
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unsorted
0: (1, 2)
1: (7, 8)
2: (13, 14)
3: (10, 11)
4: (4, 5)
sorted
0: (1, 2)
1: (4, 5)
2: (7, 8)
3: (10, 11)
4: (13, 14)
https://ideone.com/pyC8Xl
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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