Compilare: user.cpp: In function ‘int main()’: user.cpp:21:20: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] a[k][p]=NULL; ^ user.cpp:29:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[i]=0; ^ user.cpp:30:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[a[1][strlen(a[1])-1]]=1; ^ user.cpp:32:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[a[1][strlen(a[1])-1]]=1; ^ user.cpp:35:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b[a[i][0]]+1>b[a[i][strlen(a[i])-1]]){ ^ user.cpp:35:53: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b[a[i][0]]+1>b[a[i][strlen(a[i])-1]]){ ^ user.cpp:36:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[a[i][strlen(a[i])-1]]=b[a[i][0]]+1; ^ user.cpp:36:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] b[a[i][strlen(a[i])-1]]=b[a[i][0]]+1; ^ user.cpp:37:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[a[i][strlen(a[i])-1]]=i; ^ user.cpp:38:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] t[i]=c[a[i][0]]; ^ user.cpp:43:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b[i]>mn) ^ user.cpp:45:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] mn=b[i]; ^ user.cpp:46:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz=c[i]; ^ user.cpp:50:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(t[poz]>0){ ^ user.cpp:51:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[poz]=1; ^ user.cpp:52:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz=t[poz]; ^ user.cpp:54:12: warning: array subscript has type ‘char’ [-Wchar-subscripts]