View Compilation Error

0_0_32391169_19296.cpp:1:1: error: 'include' does not name a type
 include <iostream>
 ^
0_0_32391169_19296.cpp: In function 'int main()':
0_0_32391169_19296.cpp:16:11: error: 'cin' was not declared in this scope
     while(cin>>n>>m)
           ^
0_0_32391169_19296.cpp:22:22: error: 'cout' was not declared in this scope
             if(j!=0) cout<<" ";
                      ^
0_0_32391169_19296.cpp:23:13: error: 'cout' was not declared in this scope
             cout<<sum_aver(a+j*m, m);
             ^
0_0_32391169_19296.cpp:26:13: error: 'cout' was not declared in this scope
             cout<<" "<<sum_aver(a+n0*m, m0)<<endl;
             ^
0_0_32391169_19296.cpp:26:46: error: 'endl' was not declared in this scope
             cout<<" "<<sum_aver(a+n0*m, m0)<<endl;
                                              ^
0_0_32391169_19296.cpp:28:13: error: 'cout' was not declared in this scope
             cout<<endl;
             ^
0_0_32391169_19296.cpp:28:19: error: 'endl' was not declared in this scope
             cout<<endl;
                   ^