Compilare: main.cpp: In function 'int main()': main.cpp:33:9: warning: unused variable 'a' [-Wunused-variable] 33 | int a,b,c; | ^ main.cpp:33:11: warning: unused variable 'b' [-Wunused-variable] 33 | int a,b,c; | ^ main.cpp:33:13: warning: unused variable 'c' [-Wunused-variable] 33 | int a,b,c; | ^ In file included from /usr/include/c++/12.2.1/algorithm:61, from main.cpp:10: In function 'constexpr void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Pereche*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Pereche, Pereche)>]', inlined from 'constexpr void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = Pereche*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Pereche, Pereche)>]' at /usr/include/c++/12.2.1/bits/stl_algo.h:1940:31, inlined from 'constexpr void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = Pereche*; _Compare = bool (*)(Pereche, Pereche)]' at /usr/include/c++/12.2.1/bits/stl_algo.h:4853:18, inlined from 'int main()' at main.cpp:53:9: /usr/include/c++/12.2.1/bits/stl_algo.h:1849:32: warning: array subscript 16 is outside array bounds of 'Pereche [15]' [-Warray-bounds] 1849 | std::__insertion_sort(__first, __first + int(_S_threshold), __comp); | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:21:9: note: at offset 320 into object 'A' of size 300 21 | Pereche A[15]; | ^ main.cpp:42:28: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations] 42 | A[cnt].suma=sum; | ~~~~~~~~~~~^~~~ main.cpp:36:23: note: within this loop 36 | for (int i = 0; i < 3; i++) { | ~~^~~