View Compilation Error

0_0_20655941_5471.cpp:1:1: error: 'include' does not name a type
 include<iostream>
 ^
0_0_20655941_5471.cpp: In function 'int main()':
0_0_20655941_5471.cpp:7:11: error: 'cin' was not declared in this scope
     while(cin>>a>>b>>c)
           ^
0_0_20655941_5471.cpp:105:9: error: 'cout' was not declared in this scope
         cout<<d<<endl;
         ^
0_0_20655941_5471.cpp:105:18: error: 'endl' was not declared in this scope
         cout<<d<<endl;
                  ^