Compilare: main.cpp: In member function 'parser& parser::operator>>(int&)': main.cpp:18:13: warning: variable 'semn' set but not used [-Wunused-but-set-variable] int semn=1; ^~~~ main.cpp: In function 'int main()': main.cpp:63:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euclid3.in","r",stdin); ^ main.cpp:64:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euclid3.out","w",stdout); ^ main.cpp: In member function 'void parser::Load()': main.cpp:36:27: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(B,1,b,stdin); ^