View Compilation Error

0_0_20520569_28929.cpp: In function 'trienode* creat()':
0_0_20520569_28929.cpp:20:17: error: invalid use of member (did you forget the '&' ?)
     node->exist = false;
                 ^
0_0_20520569_28929.cpp: In function 'void inser(trie, char*)':
0_0_20520569_28929.cpp:39:19: error: invalid use of member (did you forget the '&' ?)
     node -> exist = true;
                   ^