View Compilation Error

0_0_28934193_27944.cpp:4:1: error: expected initializer before 'struct'
 struct node{
 ^
0_0_28934193_27944.cpp:6:2: error: 's' does not name a type
 }s[1010];
  ^
0_0_28934193_27944.cpp:7:10: error: 'node' was not declared in this scope
 bool cmp(node a,node b){
          ^
0_0_28934193_27944.cpp:7:17: error: 'node' was not declared in this scope
 bool cmp(node a,node b){
                 ^
0_0_28934193_27944.cpp:7:23: error: expression list treated as compound expression in initializer [-fpermissive]
 bool cmp(node a,node b){
                       ^
0_0_28934193_27944.cpp:7:24: error: expected ',' or ';' before '{' token
 bool cmp(node a,node b){
                        ^
0_0_28934193_27944.cpp: In function 'int main()':
0_0_28934193_27944.cpp:16:9: error: 's' was not declared in this scope
    cin>>s[i].day;
         ^
0_0_28934193_27944.cpp:17:9: error: 's' was not declared in this scope
    cin>>s[i].fen;
         ^
0_0_28934193_27944.cpp:19:10: error: 'book' was not declared in this scope
   memset(book,0,sizeof(book));
          ^