View Compilation Error

0_0_19956285_22721.cpp: In function 'void ctree(char*)':
0_0_19956285_22721.cpp:27:23: error: comparison between distinct pointer types 'char*' and 'node*' lacks a cast [-fpermissive]
    p->next[id]==Nnode();
                       ^
0_0_19956285_22721.cpp:29:4: error: cannot convert 'char*' to 'node*' in assignment
   p=p->next[id];
    ^
0_0_19956285_22721.cpp: In function 'int find(char*)':
0_0_19956285_22721.cpp:41:4: error: cannot convert 'char*' to 'node*' in assignment
   p=p->next[id];
    ^
0_0_19956285_22721.cpp:51:7: error: cannot convert 'char*' to 'node*' in assignment
     p = p->next[z];         
       ^