Compilare: main.cpp: In function 'int main()': main.cpp:28:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | while(poz<s.size()){ | ~~~^~~~~~~~~ main.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | while(poz<s.size() && s[poz]>='0' && s[poz]<='9'){ | ~~~^~~~~~~~~ main.cpp:45:28: warning: array subscript has type 'char' [-Wchar-subscripts] 45 | rasp[s[poz]]+=semn*nr; | ^ main.cpp:52:24: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | rasp[s[poz]]+=semn; | ^