Borderou de evaluare (job #689772)

Compilare: main.cpp: In function 'int main()': main.cpp:27:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 27 | if(n - 1 != -1 && n != cifra.size() - 1){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:28:66: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 28 | if((cifra[n-1] != '+' && cifra[n-1] != '-') || n != cifra.size() - 1){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:34:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 34 | if(e + 2 != cifra.size()){ | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:38:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 38 | if(e + 1 != cifra.size()){ | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:47:65: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 47 | if((cifra[e - 1] != '+' && cifra[e - 1] != '-' && e != cifra.size() - 1)){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:49:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 49 | if(e + 2 != cifra.size()){ | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:53:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 53 | if(e + 1 != cifra.size()){ | ~~~~~~^~~~~~~~~~~~~~~