Compilare: user.cpp: In function ‘int getInt()’: user.cpp:24:63: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++cnt>=buffer) fread(buff, buffer, 1, stdin), cnt=0; ^ user.cpp:28:63: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++cnt>=buffer) fread(buff, buffer, 1, stdin), cnt=0; ^ user.cpp: In function ‘int main()’: user.cpp:40:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir100.in", "r", stdin); ^ user.cpp:41:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir100.out", "w", stdout); ^