Here is an example program...

#include "stdafx.h"
#include "string.h"

int recursive(int length)
{
    if ( length <= 1 )
      return 1;
    else
      return length*recursive(length-1);
}

int main(int argc, char* argv[])
{
	char data[] = "ready";

    printf("maximum possibilities  - %d \n", recursive
(strlen(data)));
	return 0;
}

Hi thanks for this answer
But i need all that possibilities to be printed 
If u can make that answer let me know?

Hello dear....
sorry for my misunderstanding for the question..
please check this code it might help you..
************************************************************
#include "stdafx.h"
#include "string.h"
#include "conio.h"

#define BUFFER_SIZE 256

int fcto(int value)
{
	int result;
	
	if(value <= 1)
	{
		return 1;
	}
	else
	{
	  return (value*fcto(value-1));
	}
}
void PrintAllValues(char *ptr,int number)
{
   char backup[BUFFER_SIZE],*first, *second,*temp1;
   int loop, length;
   char result[BUFFER_SIZE];
   char temp,temp12;
   int count =0,i;
   static int serial =0;
   memset(backup,0x00, BUFFER_SIZE);
   memset(result,0x00, BUFFER_SIZE);
   memcpy(result,ptr,BUFFER_SIZE);
   memcpy(backup,ptr,BUFFER_SIZE);
   first = second = result;
   temp1 = backup;
   length= strlen(result);
   printf("\r\n%s - %d",result,serial);
   for(loop=1;loop<=number;)
   {
	  second += count;
          first += count;
          if(*(first+1) == '\0')
	  {
	        temp = result[0];
                for(i = 0 ; i < length;i++)
		{
			if(i == 0)
			{
			  temp =result[i]; 
			  result[i] = result[length-1];
			}
			else
			{
                          temp12 = result[i];
			  result[i] = temp;
			  temp = temp12;
			}
		}
		memcpy(backup,result,BUFFER_SIZE);
                first = second = result;
		count = 0;
		loop++;
		serial++;
		printf("\r\n%s - %d",result,serial);
	  }
          while((*second != '\0') && (loop <= number))
	  { 
		serial++;
		loop++;
                if(*first != *second)
		{
		  temp = *first;
		  *first = *second;
		  *second = temp;
		  second++;
		  first++;
         	  printf("\r\n%s - %d",result,serial);
		}
		else
		{
			printf("\r\n****** - %d",serial);
			second++;
		}

	  }
          memcpy(result,backup,BUFFER_SIZE);
	  first = second = result;
	  count++;	  
    }
}

int main()
{
	char *ptr = "abcdef";// enter the string
	int data1;

	data1 = fcto(strlen(ptr));
        PrintAllValues(ptr,data1);

	getch();
	return 0;
}
************************************************************

Please let me know if you face any problem.

Thanks
sunil