Compilare: user.cpp: In function ‘nod* adaug(nod*, char)’: user.cpp:22:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] x -> fii[poz[ch]] = adaug(x -> fii[poz[ch]], fgetc(in)); ^ user.cpp:22:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] x -> fii[poz[ch]] = adaug(x -> fii[poz[ch]], fgetc(in)); ^ user.cpp:22:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] x -> fii[poz[ch]] = adaug(x -> fii[poz[ch]], fgetc(in)); ^ user.cpp:22:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] x -> fii[poz[ch]] = adaug(x -> fii[poz[ch]], fgetc(in)); ^ user.cpp: In function ‘int main()’: user.cpp:34:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[ch] = dr; ^ user.cpp:38:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[ch] = dr; ^ user.cpp:30:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d ", &n); ^