Compilare: user.cpp: In function ‘int getTerm()’: user.cpp:30:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[i] == 'N' && S[i + 1] == 'O') { ^ user.cpp:34:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[i] == '(') { ^ user.cpp:39:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[i] == 'T' && S[i + 1] == 'R') { ^ user.cpp:43:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[i] == 'F' && S[i + 1] == 'A') { ^ user.cpp:47:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[i] >= 'A' && S[i] <= 'Z') { ^ user.cpp:47:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (S[i] >= 'A' && S[i] <= 'Z') { ^ user.cpp:48:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] v = A[S[i]]; ^ user.cpp:48:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] v = A[S[i]]; ^ user.cpp: In function ‘int main()’: user.cpp:59:19: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf ("%d\n", &n); ^ user.cpp:63:6: warning: array subscript has type ‘char’ [-Wchar-subscripts] A[C] ^= 1; ^ user.cpp: In function ‘int getTerm()’: user.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ /tmp/ccFWmXDu.o: In function `main': user.cpp:(.text.startup+0x50): warning: the `gets' function is dangerous and should not be used.