Compilare: user.cpp: In function ‘void adun(char*, char*, char*)’: user.cpp:48:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] A[++A[0]] = t % BASE; ^ user.cpp: In function ‘void afis(char*)’: user.cpp:66:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(g , "%d", A[A[0]]); ^ user.cpp: In function ‘int main()’: user.cpp:18:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f , "%hd" , &n); ^