C语言实现输入一个字符串后打印出该字符串中字符的所有排列

/* 
* Copyright (c) 2011 alexingcool. All Rights Reserved. 
*/ 
#include <iostream>
#include <algorithm>

using namespace std;

char array[] = {'a', 'b', 'c'};
const int size = sizeof array / sizeof *array;

void Perm(char *array, int pos, int last) 
{ 
 if (pos == last) {
 copy(array, array + size, ostream_iterator<char>(cout, ""));
 cout << endl;
 } 
 else { 
 for(int i = pos; i <= last; i++) { 
  swap(array[i], array[pos]); 
  Perm(array, pos + 1, last); 
  swap(array[i], array[pos]); 
 } 
 }
}

void main()
{
 Perm(array, 0, 2);
}