Compilare: user.cpp: In function ‘int main()’: user.cpp:33:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=0; j<ap[a]; j++) ^ user.cpp:34:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c[a][j]==b) ^ user.cpp:38:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[a][ap[a]]=b; ^ user.cpp:38:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[a][ap[a]]=b; ^ user.cpp:39:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[a]++; ^ user.cpp:42:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(j=0; j<ap[b]; j++) ^ user.cpp:43:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c[b][j]==a) ^ user.cpp:47:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[b][ap[b]]=a; ^ user.cpp:47:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[b][ap[b]]=a; ^ user.cpp:48:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[b]++; ^