Compilare: user.cpp: In function ‘void bkt(unsigned int)’: user.cpp:35:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[m[x.l+dl[i]][x.c+dc[i]]]++; ^ user.cpp:38:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fr[i]) fr[i]=0; ^ user.cpp:38:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fr[i]) fr[i]=0; ^ user.cpp: In function ‘int main()’: user.cpp:64:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d ", &n); ^