[ILUG] unexpected output from a c program...

[John Allen]

Interesting though this works,

#include <stdio.h>

int main(void)
{
   int a = 60, b = 6, c = 10;
   float f1 = 0.3;
   float f2 = 0.7;

   printf("%d = %d\n", (int) (((60/6)*f1) + (10*f2)),
               (int) ((( a/b)*f1) + ( c*f2)));
   exit(1);
}

kevin lyda wrote:

> why does this...
> 
>     int main(void) 
>     { 
> 	int a = 60, b = 6, c = 10; 
> 
> 	printf("%d = %d\n", (int) (((60/6)*0.3) + (10*0.7)),
> 			    (int) ((( a/b)*0.3) + ( c*0.7))); 
> 	exit(1); 
>     } 
> 
> ...yield...
> 
>     10 = 9
> 
> ...on an intel linux box, while it yields...
> 
>     10 = 10
> 
> ...on a sparc solaris box?  both compiled with gcc.  why do i suspect
> to see the letters i (once) and e (thrice) in the answer?
> 
> this is from a /. comment btw.
> 
> kevin
>