View Compilation Error

0_0_34739767_1244.c: In function 'main':
0_0_34739767_1244.c:4:16: error: expected ';', ',' or ')' before '&' token
  void fac(char &a,char &b);
                ^
0_0_34739767_1244.c: At top level:
0_0_34739767_1244.c:17:15: error: expected ';', ',' or ')' before '&' token
 void fac(char &a,char &b)
               ^