Borderou de evaluare (job #642315)

Compilare: main.cpp: In function 'int main()': main.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 25 | for (i = 0; i < a.size() - 1; ++i) | ~~^~~~~~~~~~~~~~ main.cpp:30:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 30 | for (i = 0; i < b.size(); ++i) | ~~^~~~~~~~~~ main.cpp:36:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 36 | for (i = 0; i < a.size() - 1; ++i) { | ~~^~~~~~~~~~~~~~ main.cpp:52:23: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] 52 | v.push_back('A' + val); | ~~~~^~~~~