Compilare: main.cpp: In function 'int main()': main.cpp:20:28: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 20 | for (auto i = 0; i < strlen(s); i++) { | ~~^~~~~~~~~~~ main.cpp:21:25: warning: array subscript has type 'char' [-Wchar-subscripts] 21 | sLetters[s[i]]++; | ~~~^ main.cpp:23:28: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (auto i = 0; i < strlen(t); i++) { | ~~^~~~~~~~~~~ main.cpp:24:25: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | tLetters[t[i]]++; | ~~~^