Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:20:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^ main.cpp: In function 'void ciur()': main.cpp:80:12: warning: iteration 99998 invokes undefined behavior [-Waggressive-loop-optimizations] if (v[i] == 0) ~~~^ main.cpp:79:17: note: within this loop for (i = 2; i <= NMAX; i++) ~~^~~~~~~ main.cpp:74:10: warning: iteration 49998 invokes undefined behavior [-Waggressive-loop-optimizations] v[i] = 1; ~~~~~^~~ main.cpp:73:17: note: within this loop for (i = 4; i <= NMAX; i += 2) ~~^~~~~~~