View Compilation Error

0_0_22384972_16208.cpp:10:1: error: expected unqualified-id before '-' token
 -
 ^
0_0_22384972_16208.cpp:13:2: error: 'edge' does not name a type
 }edge[MAXN*2];
  ^
0_0_22384972_16208.cpp: In function 'void add_edge(int, int, int)':
0_0_22384972_16208.cpp:23:5: error: 'edge' was not declared in this scope
     edge[tot].to=v;
     ^
0_0_22384972_16208.cpp: In function 'void dfs(int, int)':
0_0_22384972_16208.cpp:44:31: error: 'edge' was not declared in this scope
     for(int i=head[u];i!=-1;i=edge[i].next){
                               ^