Array of Pointers to integer in C

/*Array of pointers to integers i.e. Array of integer pointers. Since integer pointer store one address.So,array of integer pointers is used to store  many addresses .*/
#include<stdio.h>
int main()
{
    printf("\nBefore starting array of pointers Understand pointer \n");
    printf("\nint *p; tells to compiler that p will be used to store single address of integer\n");
    int *p;//p will be used to store address of a pointer
    int i=10;
    p=&i;//pointer is used to store address of int i
    printf("address of i=%u or p=%u\n",&i,p);
    printf("value of i=%d or *p=%u\n",i,*p);


    printf("\nNow understanding array of pointer to integers.\n");
    printf("\narray of pointers to integers is used to store many addresses of integers\n");
    int a=10,b=20,c=30;
    int* arr[]={&a,&b,&c};/*arr is array of integer pointers so contains addresses*/
 
    printf("\nAddresses of integers:\n");
    printf("address of a=%u\n",&a);
    printf("address of b=%u\n",&b);
    printf("address of c=%u\n",&c);



    printf("\nAddrs of integers are stored in arr so each arr[i] is an address:\n");
    printf("arr[0]=%u\n",arr[0]);
    printf("arr[1]=%u\n",arr[1]);
    printf("arr[2]=%u\n",arr[2]);

    printf("\nsince arr[i] are address so *arr[i] gives values stored at address stored in them\n");
    printf("\narr[0]=%u\n",*arr[0]);
    printf("arr[1]=%u\n",*arr[1]);
    printf("arr[2]=%u\n",*arr[2]);
return 0;
}
/*OUTPUT:
Before starting array of pointers Understand pointer.
int *p; tells to compiler that p will be used to store single address of integer
address of i=3220971004 or p=3220971004
value of i=10 or *p=10

Now understanding array of pointer to inegers.

array of pointers to integers is used to store many addreses of integers

Addresses of integers:
address of a=3220971008
address of b=3220971012
address of c=3220971016

Addrs of integers are stored in arr so each arr[i] is an address:
arr[0]=3220971008
arr[1]=3220971012
arr[2]=3220971016

since arr[i] are address so *arr[i] gives values stored at address stored in them

arr[0]=10
arr[1]=20
arr[2]=30
*/