View Compilation Error

0_0_17305647_2712.cpp: In function 'int main()':
0_0_17305647_2712.cpp:11:2: error: 'cin' was not declared in this scope
  cin>>T;
  ^
0_0_17305647_2712.cpp:14:35: error: 'scanf' was not declared in this scope
   scanf("%I64d%I64d%I64d",&a,&b,&c);
                                   ^
0_0_17305647_2712.cpp:17:4: error: 'cout' was not declared in this scope
    cout<<"Yes"<<endl;
    ^
0_0_17305647_2712.cpp:17:17: error: 'endl' was not declared in this scope
    cout<<"Yes"<<endl;
                 ^
0_0_17305647_2712.cpp:30:4: error: 'cout' was not declared in this scope
    cout<<"Yes";
    ^
0_0_17305647_2712.cpp:32:4: error: 'cout' was not declared in this scope
    cout<<"No";
    ^
0_0_17305647_2712.cpp:34:3: error: 'cout' was not declared in this scope
   cout<<endl;
   ^
0_0_17305647_2712.cpp:34:9: error: 'endl' was not declared in this scope
   cout<<endl;
         ^