Compilare: user.cpp: In function ‘int main()’: user.cpp:41:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[w1.a][w1.b]==0 and mat[w1.a][w1.b]==0) ^ user.cpp:41:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[w1.a][w1.b]==0 and mat[w1.a][w1.b]==0) ^ user.cpp:41:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[w1.a][w1.b]==0 and mat[w1.a][w1.b]==0) ^ user.cpp:41:53: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[w1.a][w1.b]==0 and mat[w1.a][w1.b]==0) ^ user.cpp:43:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[w1.a][w1.b]=1; ^ user.cpp:43:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[w1.a][w1.b]=1; ^ user.cpp:44:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] dist[w1.a][w1.b]=dist[w.a][w.b]+1; ^ user.cpp:44:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] dist[w1.a][w1.b]=dist[w.a][w.b]+1; ^ user.cpp:44:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] dist[w1.a][w1.b]=dist[w.a][w.b]+1; ^ user.cpp:44:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] dist[w1.a][w1.b]=dist[w.a][w.b]+1; ^