Compilare: main.cpp: In function 'int main()': main.cpp:19:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i = 0;i < s.size();i++) | ~~^~~~~~~~~~ main.cpp:56:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(int i = mij + 1;i < s.size();i++) | ~~^~~~~~~~~~ main.cpp:56:17: warning: 'mij' may be used uninitialized in this function [-Wmaybe-uninitialized] 56 | for(int i = mij + 1;i < s.size();i++) | ^