Compilare: user.cpp: In function ‘unsigned int getInt()’: user.cpp:26:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^ user.cpp:30:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^ user.cpp: In function ‘int main()’: user.cpp:61:17: warning: ‘dr’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<st<<' '<<dr<<' '<<valmax; ^ user.cpp:61:8: warning: ‘st’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<st<<' '<<dr<<' '<<valmax; ^