Compilare: user.cpp: In function ‘int main()’: user.cpp:18:15: warning: NULL used in arithmetic [-Wpointer-arith] while(*p!=NULL) ^ user.cpp:30:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] rasp[(*p)]+=semn*SP; ^ user.cpp:31:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[(*p)]=1; ^ user.cpp:36:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] rasp[(*p)]+=semn; ^ user.cpp:37:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[(*p)]=1; ^ /tmp/cc3qY9ET.o: In function `main': user.cpp:(.text.startup+0x4c): warning: the `gets' function is dangerous and should not be used.