Borderou de evaluare (job #752802)

Compilare: main.cpp: In function 'std::string performOperation(std::string, std::string, int)': main.cpp:38:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 38 | for (int i = 0; i < X.length(); ++i) { | ~~^~~~~~~~~~~~ main.cpp:47:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 47 | for (int i = 0; i < X.length(); ++i) { | ~~^~~~~~~~~~~~