Compilare: main.cpp: In function 'int main()': main.cpp:15:15: warning: 'void* memset(void*, int, size_t)' clearing an object of type 'std::string' {aka 'class std::__cxx11::basic_string<char>'} with no trivial copy-assignment; use assignment or value-initialization instead [-Wclass-memaccess] 15 | memset(s,0,sizeof(s)); | ~~~~~~^~~~~~~~~~~~~~~ In file included from /usr/include/c++/12.2.1/string:53, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/ostream:38, from /usr/include/c++/12.2.1/iostream:39, from main.cpp:1: /usr/include/c++/12.2.1/bits/basic_string.h:85:11: note: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} declared here 85 | class basic_string | ^~~~~~~~~~~~