View Compilation Error

0_0_18098650_22148.cpp:1:1: error: 'include' does not name a type
 include <bits/stdc++.h>
 ^
0_0_18098650_22148.cpp: In function 'int main()':
0_0_18098650_22148.cpp:10:24: error: 'scanf' was not declared in this scope
     while(~scanf("%s",s)){
                        ^
0_0_18098650_22148.cpp:11:34: error: 'printf' was not declared in this scope
         printf("Case #%d: ",++cas);
                                  ^
0_0_18098650_22148.cpp:21:31: error: 'puts' was not declared in this scope
         if (!a&&!b) puts("YES");
                               ^
0_0_18098650_22148.cpp:22:23: error: 'puts' was not declared in this scope
         else puts("NO");
                       ^