Compilare: user.cpp: In function ‘unsigned int getInt()’: user.cpp:57: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:61: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:81: warning: name lookup of ‘i’ changed user.cpp:76: warning: matches this ‘i’ under ISO standard rules user.cpp:79: warning: matches this ‘i’ under old rules