csed6h1

#include <stdio.h>
#define f1(a,b,c) for(a=b;a<=c;a++)
#define f(a,b,c) for(a=b;a<c;a++)
void findDifference(int ar[],int n);

int main(void) {

     int n,i;
     scanf("%d",&n);
     int ar[n];
     f(i,0,n)
     scanf("%d",&ar[i]);
     printf("First Difference:");
     findDifference(ar,n);
     printf("Second Difference:");
     findDifference(ar,n-1);
     printf("Third Difference:");
     findDifference(ar,n-2);


     return 0;
}

void findDifference(int ar[],int n)
{
    int i;

    f(i,0,n-1)
   {   ar[i]= ar[i+1]-ar[i];
       printf("%d ",ar[i]);
   }
   printf("\n");

}