Compilare: main.cpp: In function 'void add(std::string&)': main.cpp:26:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(i = 0;i < s.size();i++){ | ~~^~~~~~~~~~ main.cpp: In function 'void rmove(std::string&)': main.cpp:43:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(i = 0;i < s.size();i++){ | ~~^~~~~~~~~~ main.cpp: In function 'int srch(std::string&, int)': main.cpp:54:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(i = 0;i < s.size();i++){ | ~~^~~~~~~~~~ main.cpp: In function 'int srch2(std::string&, int)': main.cpp:64:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(i = 0;i < s.size();i++){ | ~~^~~~~~~~~~