Compilare: main.cpp: In function 'int getnum()': main.cpp:11:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | while (ind < s.size() && isdigit(s[ind])) | ~~~~^~~~~~~~~~ main.cpp: In function 'bool getterm()': main.cpp:30:48: warning: array subscript has type 'char' [-Wchar-subscripts] 30 | return ((caut & (1 << revord[s[ind - 1]])) > 0); | ^ main.cpp: In function 'bool getprod()': main.cpp:44:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | while (ind < s.size() && s[ind] == '*') | ~~~~^~~~~~~~~~ main.cpp: In function 'bool getsum()': main.cpp:55:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | while (ind < s.size() && s[ind] == '+') | ~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:76:20: warning: array subscript has type 'char' [-Wchar-subscripts] 76 | revord[s[0]] = i; | ^ main.cpp:107:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for (i = 0; i < x.size(); i++) | ~~^~~~~~~~~~