Compilare: user.cpp:47:25: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] }fin("ciclueuler.in","r"); ^ user.cpp:47:25: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] user.cpp: In member function ‘void Euler::WriteCycle()’: user.cpp:109:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<answer.size()-1;++i)fprintf(fout,"%d ",answer[i]); ^ user.cpp: In member function ‘void Input_Reader::Advance()’: user.cpp:21:37: 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,NCHAR,in); ^ user.cpp: In constructor ‘Input_Reader::Input_Reader(char*, char*)’: user.cpp:32:33: 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,NCHAR,in); ^