Compilare: main.cpp: In function 'int evaluate(std::string)': main.cpp:41:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(int i=0;i<str.size();i++) | ~^~~~~~~~~~~ main.cpp:76:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | while(i<str.size() and str[i]>='A' and str[i]<='Z') | ~^~~~~~~~~~~ main.cpp:109:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | while(i<str.size() and str[i]>='A' and str[i]<='Z') | ~^~~~~~~~~~~ main.cpp:140:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | while(i<str.size() and str[i]>='A' and str[i]<='Z') | ~^~~~~~~~~~~ main.cpp:171:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 171 | while(i<str.size() and str[i]>='A' and str[i]<='Z') | ~^~~~~~~~~~~ main.cpp:179:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 179 | while(i<str.size() and str[i]>='A' and str[i]<='Z') | ~^~~~~~~~~~~ main.cpp: In function 'int calculatenot(int, char)': main.cpp:27:1: warning: control reaches end of non-void function [-Wreturn-type] 27 | } | ^