Understand Dynamic Allocation of Memory

/*
Write a program to understand dynamic allocation of memory
*/

#include<stdio.h>
#include<stdlib.h>
main( )
{
    int *p, n, i;
    printf("Enter the number of integers to be entered : ");
    scanf("%d", &n);
    p = (int *)malloc(n * sizeof(int));
    if(p==NULL)
    {
        printf("Memory not available\n");
        exit(1);
    }
    for(i=0; i<n; i++)
    {
        printf("Enter an integer : ");
        scanf("%d", p+i);
    }
    for(i=0; i<n; i++)
        printf("%d\t", *(p+i));
}