Source code to print a Diamond

// Program to print a diamond shape


#include <iostream.h>
#include <conio.h>


main()
{
  int i,j,k,s,n,m;
  clrscr();
  cout << "Enter the value of m: ";
  cin >> m;
  n = (2*m)-1;
  for(i = 1, s = n; i <= n; i++,s--)
  {
  for(k = 1; k < s; k++)
    cout << " ";
    for(j = 1; j <= i; j++)
      {
    cout << "* ";
      }
      cout << "\n";
  }


 for(i = (n-1), s = 1; i >= 1; i--, s++)
 {
  for(k = 1; k <= s; k++)
    cout << " ";
    for(j = 1; j <= i; j++)
    {
    cout << "* ";
    }
    cout << "\n";
  }
  getch();
}


Output :