Compilare: user.cpp: In function ‘void Cit(int&)’: user.cpp:54:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for(; Buffer[CharB]<'0' || Buffer[CharB]>'9';verf); ^ user.cpp:55:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for(x=0;Buffer[CharB]>='0'&&Buffer[CharB]<='9';verf)x=x*10+Buffer[CharB]-48; ^ user.cpp: In function ‘int main()’: user.cpp:73:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("mexc.in", "r", stdin); ^ user.cpp:74:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("mexc.out", "w", stdout); ^ user.cpp:76:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d", &N, &M, &D); ^