Borderou de evaluare (job #680122)

Compilare: main.cpp: In function 'void file_io(std::string, std::string)': main.cpp:30:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 30 | freopen(fi.c_str(), "r", stdin); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:33:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 33 | freopen(fo.c_str(), "w", stdout); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void just_do_it()': main.cpp:133:70: warning: 'b2' may be used uninitialized in this function [-Wmaybe-uninitialized] 133 | cout << res << " " << a1 << " " << b1 << " " << a2 << " " << b2; | ^~ main.cpp:133:63: warning: 'a2' may be used uninitialized in this function [-Wmaybe-uninitialized] 133 | cout << res << " " << a1 << " " << b1 << " " << a2 << " " << b2; | ^~~ main.cpp:133:50: warning: 'b1' may be used uninitialized in this function [-Wmaybe-uninitialized] 133 | cout << res << " " << a1 << " " << b1 << " " << a2 << " " << b2; | ^~~ main.cpp:133:37: warning: 'a1' may be used uninitialized in this function [-Wmaybe-uninitialized] 133 | cout << res << " " << a1 << " " << b1 << " " << a2 << " " << b2; | ^~~