Compilare: user.cpp: In function ‘void add(char*, int, trie*)’: user.cpp:18:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] int delta=norm[*p]; ^ user.cpp: In function ‘int find(char*, trie*)’: user.cpp:27:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] int delta=norm[*p]; ^ user.cpp: In function ‘int main()’: user.cpp:41:35: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] for(int i=0;i<n;++i)in>>C+i*64+1; ^ user.cpp:42:14: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] C[n*64+1]=NULL; ^ user.cpp:48:14: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in>>P+1; ^ user.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=strlen(P+1);++j) ^ user.cpp:51:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(norm[P[j]]==0 && P[j]!='a') ^