View Compilation Error

In file included from 0_0_28514018_9319.cpp:1:0:
0_0_28514018_9319.cpp: In function 'int main()':
0_0_28514018_9319.cpp:6:36: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
  while((scanf("%c%c%c"),&a,&b,&c)!=EOF)
                                    ^