What does % (modulus) do?
10 % 3 = 1
12 % 11 = 1
27 % 12 = 3
#pragma DWIM // Do What I Mean!
~ Mad Keith ~
**I use Software Mode**
look 10 % 3 = 1
ok....3*3 = 9, 10-9 = 1
1 is the answer
.
e.g.
10.3 % 1.5 = 1.3
because 6*1.5 + 1.3 = 10.3
but instead of 6 you are only allowed to take integer values.
Visit our homepage: www.rarebyte.de.st
GA
You''ll see it quite often in calculating random numbers. The C rand() function returns a 32-bit int. If you need a smaller number (and you almost always do), you can mod it to make it smaller.
For example, rand()%100 will give you a value from 0 to 99.
(my byline from the Gamedev Collection series, which I co-edited) John Hattan has been working steadily in the casual game-space since the TRS-80 days and professionally since 1990. After seeing his small-format games turned down for what turned out to be Tandy's last PC release, he took them independent, eventually releasing them as several discount game-packs through a couple of publishers. The packs are actually still available on store-shelves, although you'll need a keen eye to find them nowadays. He continues to work in the casual game-space as an independent developer, largely working on games in Flash for his website, The Code Zone (www.thecodezone.com). His current scheme is to distribute his games virally on various web-portals and widget platforms. In addition, John writes weekly product reviews and blogs (over ten years old) for www.gamedev.net from his home office where he lives with his wife and daughter in their home in the woods near Lake Grapevine in Texas.
quote: For example, rand()%100 will give you a value from 0 to 99.
0 to 99 INCLUSIVE, just wanted to make that clear, hehe.
GO LEAFS GO!
