View Compilation Error

0_0_15352239_29217.cpp: In function 'int main()':
0_0_15352239_29217.cpp:5:26: error: expected ')' before 'a'
 while(scanf("%d%d",&a,&b)a!=0||b!=0)
                          ^
0_0_15352239_29217.cpp:5:36: error: expected ';' before ')' token
 while(scanf("%d%d",&a,&b)a!=0||b!=0)
                                    ^