View Compilation Error

0_0_29810166_3119.cpp: In function 'int main()':
0_0_29810166_3119.cpp:5:17: error: expected ')' before ';' token
  while(cin>>a>>b;)
                 ^
0_0_29810166_3119.cpp:5:18: error: expected primary-expression before ')' token
  while(cin>>a>>b;)
                  ^