Compilare: user.cpp: In function ‘int main()’: user.cpp:20:23: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("\n%I64d",&d); ^ user.cpp:14:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:20:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n%I64d",&d); ^ /tmp/ccDZP0AU.o: In function `main': user.cpp:(.text.startup+0x2c): warning: the `gets' function is dangerous and should not be used.