Need some help making a program using floats and functions

 DevX Home Today's Headlines   Articles Archive   Tip Bank   Forums

# Thread: Need some help making a program using floats and functions

1. Registered User
Join Date
Oct 2006
Posts
2

## Need some help making a program using floats and functions

I need to use a function that accepts three floating point values as parameters and sorts them from largest to smallest. The program must use one or more pointers and the function will affect the three variables input in the calling program (main). I can use 3 if statements. Thanks for any help you can provide me. Im new to floats :)

2. you can use the max() macro to compare each pair:
float bigger=max(a,b);
float biggest = max(bigger, c);

float smallest = (bigger == a?b:a;)
now you have the three number sorted: smallest, bigger and biggest.

3. Complex way !!! :

I'll point to the smallest with s; bigger with b; biggest with z.
U have 6 metods of arrangments:
1. s b w
2. s w b
3. b s w
4. b w s
5. w s b
6. w b s

use those numerical values as return values from the function;
Assume the three values are a,b and c:
use this: //I'll ignore the equality case.
Code:
```===================================
if(a<b&&a<c)if(b<c)return 1;else return 2;
else if(b<a&&b<c)if(a<c)return 3;else return 4;
else                   if(c<a)return 5;else return 6;
===================================```
Note that they are only 3 if statements :
the first: if(..)...else if(..)...else...
the second and the third are : if(..)...else...
Last edited by Amahdy; 10-27-2006 at 10:33 AM.

4. Registered User
Join Date
Oct 2006
Posts
2

## thanks

thanks alot for the code and your time.

5. Senior Member
Join Date
Dec 2003
Posts
3,366
float * sort3(float &one, float &two, float &three)
{
static float f[3];
float * fp = f; //check, used a pointer in the code

insert what danny said here, assigning fp[0] to smallest, fp[2] to largest, and
fp[1] the middle value.

one = two = three = 0.0; //affect the incoming variables. I *love* useless requirements, dont you?

return fp;
}

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•

 FAQ Latest Articles Java .NET XML Database Enterprise