View Compilation Error

0_0_39853666_9793.cpp: In function 'int main()':
0_0_39853666_9793.cpp:4:1: error: 'cin' was not declared in this scope
    4 | cin>>a>>b;
      | ^~~
0_0_39853666_9793.cpp:5:1: error: 'cout' was not declared in this scope
    5 | cout<<a+b;
      | ^~~~