Compilare: user.cpp: In function ‘int main()’: user.cpp:33:23: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("%d" ,mini); ^ user.cpp:21:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] { fread(buff,1,333000,stdin); ^ user.cpp: In function ‘void read(long int&)’: user.cpp:11:105: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] while(buff[pos] < '0' || buff[pos] > '9') if(++pos == 333000) fread(buff, 1, 333000, stdin), pos = 0; ^ user.cpp:16:67: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++pos == 333000) fread(buff, 1, 333000, stdin), pos = 0; ^