Compilare: user.cpp: In function ‘void back(char, char, char)’: user.cpp:24:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[lin][j]=='.'&&ap[lin][j]==0) ^ user.cpp:24:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[lin][j]=='.'&&ap[lin][j]==0) ^ user.cpp:24:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[lin][j]=='.'&&ap[lin][j]==0) ^ user.cpp:24:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[lin][j]=='.'&&ap[lin][j]==0) ^ user.cpp:26:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] x[poz]=lin; ^ user.cpp:27:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] y[poz]=j; ^ user.cpp:39:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(urmm[lin][j]<=n) back(lin,urmm[lin][j],poz+1); ^ user.cpp:39:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(urmm[lin][j]<=n) back(lin,urmm[lin][j],poz+1); ^ user.cpp:39:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(urmm[lin][j]<=n) back(lin,urmm[lin][j],poz+1); ^ user.cpp:39:53: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(urmm[lin][j]<=n) back(lin,urmm[lin][j],poz+1); ^ /tmp/ccT7NIDT.o: In function `main': user.cpp:(.text.startup+0xac): warning: the `gets' function is dangerous and should not be used.