Compilare: main.cpp: In lambda function: main.cpp:239:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 239 | for (int i = 0; i < len; ++i) | ~~^~~~~ main.cpp: In function 'std::pair<int, std::array<int, 1000> > strmatch(const std::string&, const std::string&)': main.cpp:265:28: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare] 265 | for (int i = a_size; i <= b_size; ++i) { | ~~^~~~~~~~~ main.cpp:274:15: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare] 274 | if (i < b_size) | ~~^~~~~~~~ In file included from /usr/include/c++/12.2.1/bits/stl_algobase.h:64, from /usr/include/c++/12.2.1/array:43, from main.cpp:2: In constructor 'constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U1 = int; _U2 = std::array<int, 1000>&; _T1 = int; _T2 = std::array<int, 1000>]', inlined from 'std::pair<int, std::array<int, 1000> > strmatch(const std::string&, const std::string&)' at main.cpp:222:31: /usr/include/c++/12.2.1/bits/stl_pair.h:281:42: warning: 'positions' may be used uninitialized [-Wmaybe-uninitialized] 281 | : first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y)) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::pair<int, std::array<int, 1000> > strmatch(const std::string&, const std::string&)': main.cpp:218:27: note: 'positions' declared here 218 | std::array<int, 1000> positions; | ^~~~~~~~~