View Compilation Error

0_0_21625488_23774.cpp:1:1: error: 'include' does not name a type
 include<cstdio>
 ^
0_0_21625488_23774.cpp: In function 'int main()':
0_0_21625488_23774.cpp:25:24: error: 'scanf' was not declared in this scope
     int t;scanf("%d",&t);
                        ^
0_0_21625488_23774.cpp:33:40: error: 'printf' was not declared in this scope
         printf("Case #%d: %lld\n",j,ans);
                                        ^