View Compilation Error

0_0_39222578_8613.cpp: In function 'int main()':
0_0_39222578_8613.cpp:3:11: error: 'cin' was not declared in this scope
    3 |     while(cin>>n){
      |           ^~~
0_0_39222578_8613.cpp:22:28: error: 'cout' was not declared in this scope
   22 |                 if(j == 6) cout<<a[j];
      |                            ^~~~
0_0_39222578_8613.cpp:23:22: error: 'cout' was not declared in this scope
   23 |                 else cout<<' '<<a[j];
      |                      ^~~~
0_0_39222578_8613.cpp:25:13: error: 'cout' was not declared in this scope
   25 |             cout<<endl;
      |             ^~~~
0_0_39222578_8613.cpp:25:19: error: 'endl' was not declared in this scope
   25 |             cout<<endl;
      |                   ^~~~