View Compilation Error

0_0_31383199_3349.cpp: In function 'int main()':
0_0_31383199_3349.cpp:5:2: error: 'cin' was not declared in this scope
  cin>>t;
  ^
0_0_31383199_3349.cpp:18:5: error: 'cout' was not declared in this scope
     cout<<"Brother"<<endl;
     ^
0_0_31383199_3349.cpp:18:22: error: 'endl' was not declared in this scope
     cout<<"Brother"<<endl;
                      ^
0_0_31383199_3349.cpp:20:5: error: 'cout' was not declared in this scope
     cout<<"John"<<endl;
     ^
0_0_31383199_3349.cpp:20:19: error: 'endl' was not declared in this scope
     cout<<"John"<<endl;
                   ^