Compilare: user.cpp: In function ‘bool fact()’: user.cpp:96:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[s[p]]=!v[s[p]]; ^ user.cpp:96:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[s[p]]=!v[s[p]]; ^ user.cpp:97:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] val=v[s[p]]; ^ user.cpp:100:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] val=v[s[p]]; ^ user.cpp:81:10: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized] bool val; ^