#include <stdio.h>
#include <stdlib.h>
void recursivePart(int pages[])
{
int st,len,k,c,j;
printf("Enter the index of the starting block and its length: ");
 scanf("%d %d", &st, &len);
 k = len;
 if ( pages[st] ==0)
 {
 for ( j = st; j < (st + k) ;j++)
 {
 if (pages[j]==0)
 {
 pages[j] = 1 ;
  printf("%d------>%d\n", j, pages[j]);
   }
   else
   {
   printf("The block %d is already allocated \n",j);  k++;
   }
   }
   }
else
printf("The block %d is already allocated \n",st); 
printf("Do you want to enter more files? \n");
printf("Enter 1 for Yes, Enter 0 for No: ");
scanf("%d", &c);

if ( c ==1) recursivePart(pages);
 else exit(0); return;
 }
 int main()
 {
  int pages[50], p, a;
  for (int i=0; i < 50;i++)
  pages [i] = 0;
  printf("Enter the number of blocks already allocated: ");
  scanf("%d", &p);
  printf("Enter the blocks already allocated: ");
  for (int i = 0; i < p; i++)
  {
  scanf ("%d",&a);
   pages[a]= 1;
   }
   recursivePart(pages);
   return 0 ;
   }