Compilare: user.cpp: In function ‘int main()’: user.cpp:27:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!ap[ s[i] ]) ++T; ^ user.cpp:28:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++ap[ s[i] ]; ^ user.cpp:38:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(deja[ s[j] ] != idx) --cate[ s[j] ], deja[ s[j] ] = idx; ^ user.cpp:38:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(deja[ s[j] ] != idx) --cate[ s[j] ], deja[ s[j] ] = idx; ^ user.cpp:38:68: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(deja[ s[j] ] != idx) --cate[ s[j] ], deja[ s[j] ] = idx; ^ user.cpp:42:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(deja[ s[j] ] != idx) --cate[ s[j] ], deja[ s[j] ] = idx; ^ user.cpp:42:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(deja[ s[j] ] != idx) --cate[ s[j] ], deja[ s[j] ] = idx; ^ user.cpp:42:64: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(deja[ s[j] ] != idx) --cate[ s[j] ], deja[ s[j] ] = idx; ^ user.cpp:19:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k,add,best,sum,idx,nr,X; ^ user.cpp:21:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",s); ^