View Compilation Error

0_0_27998876_14269.cpp:1:1: error: 'include' does not name a type
 include<stdio.h>
 ^
0_0_27998876_14269.cpp: In function 'int main()':
0_0_27998876_14269.cpp:21:17: error: 'scanf' was not declared in this scope
    scanf("%d",&n);
                 ^
0_0_27998876_14269.cpp:28:25: error: 'printf' was not declared in this scope
        printf("%d\n",ans);
                         ^