Compilare: user.cpp: In function ‘int main()’: user.cpp:12:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] p=u=poz=m=nr=1, ++v[a[1]]; ^ user.cpp:16:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[u]]) ^ user.cpp:17:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++v[a[u]]; ^ user.cpp:20:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++v[a[u]], ++nr; ^ user.cpp:23:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[a[p]]==1) --nr; ^ user.cpp:24:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] --v[a[p]], ++p; ^