Compilare: user.cpp: In function ‘int GetInt()’: user.cpp:19:55: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(p==Size) p=0, fread(Buffer, 1, Size, stdin); ^ user.cpp:29:55: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(p==Size) p=0, fread(Buffer, 1, Size, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:47:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("easychoice.in", "r", stdin); ^ user.cpp:48:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("easychoice.out", "w", stdout); ^ user.cpp:50:39: 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, Size, stdin), p=0; ^