Compilare: user.cpp: In function ‘void back(char, char, char)’: user.cpp:15:6: warning: array subscript has type ‘char’ [-Wchar-subscripts] { s[k]=s[k-1]+p[n-k+1][v[lin][col]]; ^ user.cpp:15:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] { s[k]=s[k-1]+p[n-k+1][v[lin][col]]; ^ user.cpp:15:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] { s[k]=s[k-1]+p[n-k+1][v[lin][col]]; ^ user.cpp:15:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] { s[k]=s[k-1]+p[n-k+1][v[lin][col]]; ^ user.cpp:16:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[k]<smin) ^ user.cpp:17:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] { x[k]=v[lin][col]; ^ user.cpp:17:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] { x[k]=v[lin][col]; ^ user.cpp:17:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] { x[k]=v[lin][col]; ^ user.cpp:18:8: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[lin][col]=0; ^ user.cpp:18:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[lin][col]=0; ^ user.cpp:22:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] { for(short l,c,r=1; r<=nr[x[k]]; ++r) ^ user.cpp:22:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] { for(short l,c,r=1; r<=nr[x[k]]; ++r) ^ user.cpp:23:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] { l=(e[vec[x[k]][r]]>>4); ^ user.cpp:23:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] { l=(e[vec[x[k]][r]]>>4); ^ user.cpp:24:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] c=(e[vec[x[k]][r]]&15); ^ user.cpp:24:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] c=(e[vec[x[k]][r]]&15); ^ user.cpp:32:14: warning: array subscript has type ‘char’ [-Wchar-subscripts]