Compilare: main.cpp: In member function 'void nrMare::scan(std::istream&)': main.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0; i < buf.size(); i++) { | ~~^~~~~~~~~~~~ In member function 'void nrMare::clear()', inlined from 'void nrMare::copy(const nrMare&)' at main.cpp:112:10, inlined from 'int main()' at main.cpp:128:11: main.cpp:102:37: warning: 'aux.nrMare::nrD' may be used uninitialized [-Wmaybe-uninitialized] 102 | memset(dig, 0, sizeof(dig[0]) * nrD); | ^~~ main.cpp: In function 'int main()': main.cpp:125:13: note: 'aux' declared here 125 | nrMare n, aux; // aux, pt ca functia divide e distructiva | ^~~