How do you print an address in C?

Question

Given an ODD number, print diamond pattern of stars recursively.

Example
Input: n = 5,

Output:

  *
 ***
*****
 ***
  *

Answer 1

Dont know the intent of the query, I believe you want to know how to print a pointer if that is the case then use %p to print a pointer.

p The argument shall be a pointer to void. The value of the pointer is converted to a sequence of printing characters, in an implementation-defined manner.

Example

main() 
{
    int a = 10;
    printf("The memory address of a is: %p\n", (void*) &a);
}