Compilare: user.cpp: In function ‘int main()’: user.cpp:36:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] icp[a][b]=icp[b][a]=1; ^ user.cpp:36:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] icp[a][b]=icp[b][a]=1; ^ user.cpp:36:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] icp[a][b]=icp[b][a]=1; ^ user.cpp:36:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] icp[a][b]=icp[b][a]=1; ^ user.cpp:28:10: warning: unused variable ‘bun’ [-Wunused-variable] bool bun; ^