View Compilation Error

0_0_24679830_12176.cpp:1:1: error: 'include' does not name a type
 include<iostream>  
 ^
0_0_24679830_12176.cpp: In function 'int main()':
0_0_24679830_12176.cpp:10:11: error: 'cin' was not declared in this scope
     while(cin>>n)  
           ^
0_0_24679830_12176.cpp:12:29: error: 'memset' was not declared in this scope
         memset(a,0,sizeof(a));  
                             ^
0_0_24679830_12176.cpp:25:17: error: 'cout' was not declared in this scope
                 cout<<i<<endl;  
                 ^
0_0_24679830_12176.cpp:25:26: error: 'endl' was not declared in this scope
                 cout<<i<<endl;  
                          ^