View Compilation Error

0_0_38894822_12468.cpp: In function 'int main()':
0_0_38894822_12468.cpp:4:12: error: 'cin' was not declared in this scope
    4 |     while (cin>>N != EOF) {
      |            ^~~
0_0_38894822_12468.cpp:11:9: error: 'cout' was not declared in this scope
   11 |         cout<<sum;
      |         ^~~~