View Compilation Error

0_0_39639602_13579.cpp: In function 'int main()':
0_0_39639602_13579.cpp:4:20: error: 'a' was not declared in this scope
    4 |         while(cin>>a>>b){
      |                    ^
0_0_39639602_13579.cpp:4:23: error: 'b' was not declared in this scope
    4 |         while(cin>>a>>b){
      |                       ^
0_0_39639602_13579.cpp:5:17: error: 'count' was not declared in this scope
    5 |                 count<<a+b<<endl;
      |                 ^~~~~