Compilare: user.cpp: In function ‘int main()’: user.cpp:55:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i]=(v[i]<<6)+code[ch]; ^ user.cpp: In function ‘char advance()’: user.cpp:13:27: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,size,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:37:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("incantatii.in","r",stdin); ^ user.cpp:38:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("incantatii.out","w",stdout); ^