Compilare: main.cpp: In function 'int countNumbers(std::string, int)': main.cpp:18:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | if(length == expresion.length()) { | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int sumTotal(std::string)': main.cpp:50:9: warning: unused variable 'total' [-Wunused-variable] 50 | int total = 0; | ^~~~~ main.cpp: In function 'int main()': main.cpp:65:9: warning: unused variable 'arr' [-Wunused-variable] 65 | int arr[4] = {2,3,1,8}; | ^~~ main.cpp:79:9: warning: unused variable 'numberOfValues' [-Wunused-variable] 79 | int numberOfValues = 0; | ^~~~~~~~~~~~~~