View Compilation Error

0_0_14736745_25489.c:8:22: error: expected ';', ',' or ')' before '&' token
 int StackEmpty(Stack &S)
                      ^
0_0_14736745_25489.c:12:17: error: expected ';', ',' or ')' before '&' token
 void Push(Stack &S,int x)
                 ^
0_0_14736745_25489.c:17:16: error: expected ';', ',' or ')' before '&' token
 void Pop(Stack &S,int &x)
                ^