Borderou de evaluare (job #688433)

Compilare: main.cpp: In function 'int main()': main.cpp:23:27: 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 = 1; i < str.length() - 1; i++){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 15 | freopen("centruprim.in", "r", stdin); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 16 | freopen("centruprim.out", "w", stdout); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~