Compilare: main.cpp: In function 'int main()': main.cpp:97:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | while ( poz_s < s.size() ) { | ~~~~~~^~~~~~~~~~ main.cpp: In function 'int compute(int, int, char)': main.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type] 80 | } | ^