View Compilation Error

0_0_29168669_13763.cpp:1:1: error: 'include' does not name a type
 include<bits/stdc++.h>
 ^
0_0_29168669_13763.cpp: In function 'int main()':
0_0_29168669_13763.cpp:26:17: error: 'scanf' was not declared in this scope
  scanf("%d\n",&t);
                 ^
0_0_29168669_13763.cpp:39:24: error: 'printf' was not declared in this scope
   printf("Case #%d: ",k);
                        ^
0_0_29168669_13763.cpp:50:31: error: '_max' was not declared in this scope
    int m=_max(abit,bbit,i==len);
                               ^