Compilare: user.cpp: In function ‘int main()’: user.cpp:11:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>v+1; ^ user.cpp:25:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[w[i]]=x; ^ user.cpp:39:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[i]=i-f[v[i]]; ^ user.cpp:40:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[i]=i+f[v[i]]; ^