Compilare: user.cpp: In function ‘int main()’: user.cpp:61:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<out.size();i++) ^ user.cpp: In function ‘void Read(int&)’: user.cpp:24:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] p=0,fread(s,1,MAX,IN); ^ user.cpp:30:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] p=0,fread(s,1,MAX,IN); ^ user.cpp: In function ‘int main()’: user.cpp:36:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(s,1,MAX,IN); ^