View Compilation Error

0_0_38390920_738.cpp: In function 'int main()':
0_0_38390920_738.cpp:6:14: error: expected primary-expression before '%' token
  while(scanf(%c%c%c%*c,&a,&b,&c)!=eof)
              ^
0_0_38390920_738.cpp:6:22: error: invalid type argument of unary '*' (have 'char')
  while(scanf(%c%c%c%*c,&a,&b,&c)!=eof)
                      ^
0_0_38390920_738.cpp:6:35: error: 'eof' was not declared in this scope
  while(scanf(%c%c%c%*c,&a,&b,&c)!=eof)
                                   ^
0_0_38390920_738.cpp:20:1: error: expected '}' at end of input
 }
 ^