View Compilation Error

0_0_28476487_8146.cpp:24:10: error: macro "clean" requires 2 arguments, but only 1 given
   clean(c);
          ^
0_0_28476487_8146.cpp:25:11: error: macro "clean" requires 2 arguments, but only 1 given
   clean(na);
           ^
0_0_28476487_8146.cpp:26:11: error: macro "clean" requires 2 arguments, but only 1 given
   clean(nb);
           ^
0_0_28476487_8146.cpp: In function 'int main()':
0_0_28476487_8146.cpp:24:3: error: 'clean' was not declared in this scope
   clean(c);
   ^