Compilare: main.cpp: In function 'int main()': main.cpp:17:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | while(line1<=s.length()) | ~~~~~^~~~~~~~~~~~ main.cpp:31:27: warning: iteration 256 invokes undefined behavior [-Waggressive-loop-optimizations] 31 | if(character[i]) NumErrors++; | ~~~~~~~~~~~^ main.cpp:29:23: note: within this loop 29 | for(int i=0; i<=256; i++) | ~^~~~~