Store some elements in an array, accept key & split from that point and add the first half to the end of second half

/* Write a C programme (1-D Array) store some elements in it.Accept key
	& split from that point. Add the first half to the end of second half*/
#include <stdio.h>
void main ()
{
  int number[30];
  int i,n,a,j;
printf ("Enter the value of n\n");
  scanf ("%d",&n);
printf ("enter the numbers\n");
  for (i=0; i<n; ++i)
  scanf ("%d", &number[i]);
printf ("Enter the position of the element to split the array \n");
  scanf ("%d",&a);
for (i=0; i<a; ++i)
  {
	 number[n] = number[0];
for (j=0; j<n; ++j)
	 {
		number[j] = number[j+1];
	 }
  }
printf("The resultant array is\n");
  for (i=0; i<n; ++i)
  {
  	printf ("%d\n",number[i]);
  }
}           /* End of main() */
/*-------------------------------------------------
Output
Enter the value of n
5
enter the numbers
30
10
40
50
60
Enter the position of the element to split the array
2
The resultant array is
40
50
60
30
10
----------------------------------------------------------*/