Compilare: user.cpp: In function ‘void add(Aho*, char*, int)’: user.cpp:23:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->son[*str]==0) ^ user.cpp:24:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod->son[*str]=new Aho; ^ user.cpp:25:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] add(nod->son[*str],str+1,p); ^ user.cpp: In function ‘void solve(int)’: user.cpp:53:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->son[A[i]]==0) ^ user.cpp:54:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(nod!=root&&nod->son[A[i]]==0) ^ user.cpp:56:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nod->son[A[i]]){ ^ user.cpp:57:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] nod=nod->son[A[i]]; ^ user.cpp: In function ‘void antibfs()’: user.cpp:66:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<nod->pos.size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:77:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&l,&n); ^ user.cpp:81:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&sz); ^