Borderou de evaluare (job #687829)

Compilare: main.cpp: In function 'void Op0(std::string)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 23 | for (int i = 0; i < w.length(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'void Op1(std::string)': main.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 46 | for (int i = 0; i < w.length(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'int Op2(std::string)': main.cpp:60:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 60 | for (int i = 0; i < w.length(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'int Op3(std::string)': main.cpp:73:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 73 | for (int i = 0; i < w.length(); i++) | ~~^~~~~~~~~~~~