C program to print diamond pattern

This code print diamond pattern of stars.  Diamond shape is as follows:

  *
 ***
*****
 ***
  *

#include <stdio.h>
#include <conio.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;
}