Compilare: main.cpp: In function 'void adaug(std::__cxx11::string, int)': main.cpp:22:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); ++i) { ~~^~~~~~~~~~ main.cpp: In function 'int nr_aparitii(std::__cxx11::string)': main.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); ++i) { ~~^~~~~~~~~~ main.cpp: In function 'int cmlpc(std::__cxx11::string)': main.cpp:50:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); ++i) { ~~^~~~~~~~~~ main.cpp:55:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (aux -> nr > 0 && i < s.size() - 1 || i == s.size() - 1 && aux -> nr > 1) ~~^~~~~~~~~~~~~~ main.cpp:55:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (aux -> nr > 0 && i < s.size() - 1 || i == s.size() - 1 && aux -> nr > 1) ~~^~~~~~~~~~~~~~~ main.cpp:55:21: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (aux -> nr > 0 && i < s.size() - 1 || i == s.size() - 1 && aux -> nr > 1) ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~