Compilare: user.cpp: In function ‘int main()’: user.cpp:26:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans+=tot[v[i]]; ^ user.cpp:33:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] x=x*(low[v[j]]+high[v[j]]+1); ^ user.cpp:33:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] x=x*(low[v[j]]+high[v[j]]+1); ^ user.cpp:34:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans=ans+x*high[v[i]]; ^ user.cpp:16:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&t); ^