Compilare: main.cpp: In function 'int main()': main.cpp:17:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(; i<s.length() && s[i] !='='; i++){ | ~^~~~~~~~~~~ main.cpp:61:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(; i<s.length(); i++){ | ~^~~~~~~~~~~