foo.cc:48:17: error: expected identifier before 'a'
 int Hanoi(int n,'a','b','c');
                 ^~~
foo.cc:48:17: error: expected ',' or '...' before 'a'
foo.cc: In function 'int main()':
foo.cc:53:25: error: expression list treated as compound expression in initializer [-fpermissive]
  int Hanoi(n,'a','b','c')
                         ^
foo.cc:53:25: warning: left operand of comma operator has no effect [-Wunused-value]
foo.cc:53:25: warning: right operand of comma operator has no effect [-Wunused-value]
foo.cc:53:25: warning: right operand of comma operator has no effect [-Wunused-value]
foo.cc:55:1: error: expected ',' or ';' before '}' token
 }
 ^
foo.cc:53:6: warning: unused variable 'Hanoi' [-Wunused-variable]
  int Hanoi(n,'a','b','c')
      ^~~~~

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