Compilare: user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:14:38: 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); ^ user.cpp: In function ‘int find(int)’: user.cpp:226:12: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] return rez; ^~~ user.cpp: In function ‘int main()’: user.cpp:243:11: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] a = find(a); ~~^~~~~~~~~ user.cpp:244:11: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] b = find(b); ~~^~~~~~~~~