Newbie needs help with an exercise from the Book Programming in Objective-C 2.0
Newbie needs help with an exercise from the Book Programming in Objective-C 2.0
- Subject: Newbie needs help with an exercise from the Book Programming in Objective-C 2.0
- From: James Carroll <email@hidden>
- Date: Mon, 2 Mar 2009 17:56:28 +0000
| Hi there, I hope this is the right way to go about getting help! I am methodically going through the book Programming in Objective-C 2.0 and have hit an exercise (for anyone who has it, page 96 Exercise 2) I'm stuck on. Now I am going to go back over this chapter anyway as there are clearly a few things I need to go back through, but was wondering if anyone can help tell me what I am doing wrong with this code so at least I can see what I did wrong and don't compound the mistake as I have written it a few ways and can't make it work!
I am looking for every fifth triangular numbers (5,10,15 etc to 50) using this formula; triangleNumber
= n (n + 1)
/ 2 For example to find the 10th triangle number you swap n for 10. The bit that seems to be getting me stuck is the actual formula, no matter what I do the error comes up "n is not a function", could someone show me what I'm doing wrong?Here is my last attempt at the bit of code!
#import
<Foundation/Foundation.h>
int
main (int
argc, const
char
* argv[]) {
NSAutoreleasePool
* pool = [[NSAutoreleasePool
alloc]
init]; int
n, number, triangleNumber;
//
insert code here...
NSLog(@"triangle
numbers 5 to 55");
triangleNumber
= 0;
do
{ triangleNumber
= n (n + 1)
/ 2; NSLog(@"i%
i%",
number, triangleNumber); number
= n+5; } while
( number <=50);
[pool drain];
return
0; }
Thanks in advcnace.
James Carroll Director evil.twin.artworks
|
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