Compilare: user.cpp: In function ‘int lee(coord, char)’: user.cpp:34:8: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[z][p.x][p.y] = true; ^ user.cpp:43:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(viz[z][aux.x][aux.y] == false && mat[poz.x][poz.y] == mat[aux.x][aux.y] && mat[poz.x][poz.y] != -1){ ^ user.cpp:45:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[z][aux.x][aux.y] = true; ^ user.cpp: In function ‘int main()’: user.cpp:79:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(mat[i][j] != 0 && viz[mat[i][j]][i][j] == false){ ^ user.cpp:80:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] nr[mat[i][j]]++; ^