Compilare: user.cpp: In function ‘int main()’: user.cpp:29: warning: unused variable ‘offs’ user.cpp:30: warning: unused variable ‘s’ user.cpp:17: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:27: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result