Given an ODD number, print diamond pattern of stars recursively using C/C++?

Question

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

Example
Input: n = 5,

Output:

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

Answer 1

#include <stdio.h>
int main()
{
  int n, c, k, space = 1;
  printf("Enter number of rows\n");
  scanf("%d", &n);
  space = n - 1;
  for (k = 1; k <= n; k++)
  {
    for (c = 1; c <= space; c++)
      printf(" ");
    space--;
    for (c = 1; c <= 2*k-1; c++)
      printf("*");
    printf("\n");
  }
  space = 1;
  for (k = 1; k <= n - 1; k++)
  {
    for (c = 1; c <= space; c++)
      printf(" ");
    space++;
    for (c = 1 ; c <= 2*(n-k)-1; c++)
      printf("*");
    printf("\n");
  }
  return 0;
}