Compilare: user.cpp: In function ‘void insert(Tr*, char*, int)’: user.cpp:34:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!t->fiu[*p]) ^ user.cpp:35:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] t->fiu[*p]=new Tr(); ^ user.cpp:36:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] insert(t->fiu[*p],p+1,poz+1); ^ user.cpp: In function ‘int main()’: user.cpp:63:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(kkt->fiu[s[i+j-1]]) ^ user.cpp:64:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] kkt=kkt->fiu[s[i+j-1]]; ^ user.cpp:40:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("enigma.in","r",stdin); ^ user.cpp:41:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("enigma.out","w",stdout); ^ user.cpp:42:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&t); ^ user.cpp:43:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",s+1); ^ user.cpp:46:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",c+1); ^