View Compilation Error

0_0_34696348_20711.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
 #include
         ^
0_0_34696348_20711.cpp: In function 'int main()':
0_0_34696348_20711.cpp:9:18: error: 'scanf' was not declared in this scope
     scanf("%d",&n);
                  ^
0_0_34696348_20711.cpp:36:20: error: 'printf' was not declared in this scope
       printf("%d",n);
                    ^
0_0_34696348_20711.cpp:41:23: error: 'printf' was not declared in this scope
       printf("%d",ans1);
                       ^