View Compilation Error

0_0_36465121_20851.cpp: In function 'int main()':
0_0_36465121_20851.cpp:6:17: error: expected ')' before ';' token
  while(cin>>a>>b;) cout<<a+b<<endl;
                 ^
0_0_36465121_20851.cpp:6:18: error: expected primary-expression before ')' token
  while(cin>>a>>b;) cout<<a+b<<endl;
                  ^