Compilare: main.cpp: In function 'int main()': main.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (i=0; i<s1.size(); i++) | ~^~~~~~~~~~ main.cpp:46:16: warning: array subscript has type 'char' [-Wchar-subscripts] 46 | f[s1[i]]++; | ^ main.cpp:49:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (i=0; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:50:16: warning: array subscript has type 'char' [-Wchar-subscripts] 50 | f1[s[i]]++; | ^ main.cpp:51:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for (i=0; i<s.size(); i++){ | ~^~~~~~~~~ main.cpp:52:19: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | if (f[s[i]] != 0){ | ^ main.cpp:53:24: warning: array subscript has type 'char' [-Wchar-subscripts] 53 | if (nr[s[i]] < f[s[i]]){ | ^ main.cpp:53:34: warning: array subscript has type 'char' [-Wchar-subscripts] 53 | if (nr[s[i]] < f[s[i]]){ | ^ main.cpp:59:24: warning: array subscript has type 'char' [-Wchar-subscripts] 59 | nr[s[i]]++; | ^ main.cpp:62:16: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | f1[s[i]]--; | ^ main.cpp:40:12: warning: variable 'poz' set but not used [-Wunused-but-set-variable] 40 | int i, poz, numar, q1; | ^~~ main.cpp:40:17: warning: unused variable 'numar' [-Wunused-variable] 40 | int i, poz, numar, q1; | ^~~~~ main.cpp:40:24: warning: unused variable 'q1' [-Wunused-variable] 40 | int i, poz, numar, q1; | ^~