Compilare: user.cpp: In function ‘void fil()’: user.cpp:14:54: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] inline void fil() {fread(buf, sizeof buf, DIM, stdin); ind = 0; } ^ user.cpp: In function ‘int main()’: user.cpp:81:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.in", "r", stdin); ^ user.cpp:82:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.out", "w", stdout); ^