Compilare: user.cpp: In function ‘int main()’: user.cpp:138:22: warning: argument to ‘sizeof’ in ‘void* memset(void*, int, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(s,0,sizeof(s)); ^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:20:38: 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); ^