Thread: Diamond

  1. #1
    Registered User
    Join Date
    Sep 2002
    Posts
    8

    Question Diamond

    Hi there!

    I wrote this program as my self teaching exercise, to print a diamond pattern. It works fine, but I've got a feeling that there must be a better way to do this, and to optimise the code. Could someone show me, please? Many thanks in anticipation.

    Code:
    //print diamond using *
    #include <iostream.h>
    #include <conio.h>
    
    int main()
    {
    	int t, b, s, n;
    
    	do
    	{
    		clrscr();
    		cout << "Enter integer number: ";
    		cin >> n;
    		n += 1;
    		n /= 2;
    
    		//top of diamond or pyramid
    		for (t = 1; t <= n; t++)
    		{
    			for (b = n; b >= t; b--)
    				cout << " ";
    				for (s = 1; s <= (t * 2 - 1); s++)
    					cout << "*";
    			cout << endl;
    		}
    		//bottom of diamond
    		for (t = 1; t <= n - 1; t++)
    		{
    			for (b = 1; b <= t + 1; b++)
    				cout << " ";
    				for (s = 1; s <= n * 2 - (t * 2 + 1); s++)
    					cout << "*";
    			cout << endl;
    		}
    		cout << "Any key again, Esc to quit.";
    	} while (getch()!=27);
    	return 0;
    }

  2. #2
    Confused Magos's Avatar
    Join Date
    Sep 2001
    Location
    Sweden
    Posts
    3,145
    n += 1; can be written as n++;

    And your inner for loops have a weird hiearchy:
    Code:
    for (b = n; b >= t; b--)
       cout << " ";
       for (s = 1; s <= (t * 2 - 1); s++)
          cout << "*";
    Both for-loops should be on the same level.

    Except for those, the program looks fine.
    MagosX.com

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