View Compilation Error

0_0_38528264_27511.cpp: In function 'int main()':
0_0_38528264_27511.cpp:9:20: error: expected ')' before ';' token
     while(cin>>a>>b;)
                    ^
0_0_38528264_27511.cpp:9:21: error: expected primary-expression before ')' token
     while(cin>>a>>b;)
                     ^