Compilare: user.cpp: In function ‘int main()’: user.cpp:62:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] there[comp_val[x]] = 1; } ^ user.cpp:64:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(there[ch]) ++ch; ^ user.cpp:66:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] there[ch2] = 0; } ^