Insert At the beginnig of The Arrau

#include <stdio.h>

int main()
{
   int array[100], position, c, n, value;
   printf("Enter number of elements in array\n");
   scanf("%d", &n);

   printf("Enter %d elements\n", n);

   for (c = 0; c < n; c++)
      scanf("%d", &array[c]);


   printf("Enter the value to insert\n");
   scanf("%d", &value);

   for (c = n - 1; c >= 0 - 1; c--)
      array[c+1] = array[c];

   array[0] = value;

   printf("Resultant array is\n");

   for (c = 0; c <= n; c++)
      printf("%d\n", array[c]);

   return 0;
}