I have been trying to print all the combination of a string using recursive call. I have studied a code given below . It prints the combination but now i have to store the strings in an array .
And i don't get it how do i do that ?

Input ABC

Output

ABC
ACB
BAC
BCA
CAB
CBA

All in an array

void permute(char *a, int i, int n) 
{
  int k=0;
  char *b[100];
   int j;
   if (i == n)
     {
      // *b[k]=a;
     printf("%s\n", a);
      i++;
     }
   else
   {
        for (j = i; j <= n; j++)
       {
          swap((a+i), (a+j));
          permute(a, i+1, n);
          swap((a+i), (a+j)); //backtrack
       }
   }
} 

Just strcpy() the string, into your array that you have passed into permute, as a parameter. Note that the *b[100] array is local, and won't exist after the program exits that function. Use your own array, instead.