Compilare: user.cpp: In function ‘void add(Node*, int)’: user.cpp:30:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(node->v[c]==0){ ^ user.cpp:31:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] node->v[c]=new Node; ^ user.cpp:34:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] add(node->v[c],p+1); ^ user.cpp: In function ‘int main()’: user.cpp:82:20: warning: suggest parentheses around comparison in operand of ‘^’ [-Wparentheses] if(pol^x[i]>res){ ^ user.cpp:66:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xormax.in","r",stdin); ^ user.cpp:67:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xormax.out","w",stdout); ^ user.cpp:68:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:71:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&v[i]); ^ user.cpp:88:58: warning: ‘jj’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%lld %lld %lld",res,min2(ji,jj)+1,max2(ji,jj)); ^ user.cpp:88:58: warning: ‘ji’ may be used uninitialized in this function [-Wmaybe-uninitialized]