View Compilation Error

0_0_16143155_4353.cpp:3:6: error: expected constructor, destructor, or type conversion before '(' token
 scanf("%d %d",&a,&b); while(!(a==0&&b==0)) {
      ^
0_0_16143155_4353.cpp:3:23: error: expected unqualified-id before 'while'
 scanf("%d %d",&a,&b); while(!(a==0&&b==0)) {
                       ^
0_0_16143155_4353.cpp:4:45: error: expected declaration before '}' token
 printf("%d\n",a+b); scanf("%d %d",&a,&b); } }
                                             ^