View Compilation Error

0_0_39047054_1016.cpp: In function 'int main()':
0_0_39047054_1016.cpp:4:9: error: 'ios' has not been declared
    4 |         ios::sync_with_stdio(false);
      |         ^~~
0_0_39047054_1016.cpp:5:9: error: 'cin' was not declared in this scope
    5 |         cin.tie(nullptr);
      |         ^~~
0_0_39047054_1016.cpp:1:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
  +++ |+#include <iostream>
    1 | using namespace std;
0_0_39047054_1016.cpp:6:9: error: 'cout' was not declared in this scope
    6 |         cout.tie(nullptr);
      |         ^~~~
0_0_39047054_1016.cpp:6:9: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
0_0_39047054_1016.cpp:10:62: error: 'endl' was not declared in this scope
   10 |                 cout << a << " + " << b << " = " << a + b << endl << endl;
      |                                                              ^~~~
0_0_39047054_1016.cpp:1:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
  +++ |+#include <ostream>
    1 | using namespace std;