View Compilation Error

0_0_36946909_18343.cpp: In function 'int main()':
0_0_36946909_18343.cpp:4:8: error: expected initializer before 'b'
  int a b;
        ^
0_0_36946909_18343.cpp:5:23: error: 'a' was not declared in this scope
  while(scanf("%d %d",&a,&b)!=EOF)
                       ^
0_0_36946909_18343.cpp:5:26: error: 'b' was not declared in this scope
  while(scanf("%d %d",&a,&b)!=EOF)
                          ^