On Thursday, 28 November 2013 at 23:45:26 UTC, H. S. Teoh wrote:
On Fri, Nov 29, 2013 at 12:36:18AM +0100, Binarydepth wrote:
Hi guys I'm having some problems. Calculations are not working
as
expected and I get segmentation fault. I used the 2.059
version and
it runs after compilation on compileonline.com
[...]
foreach(t; 1..51)
{
temp=t;
t*=20;
Modifying the loop variable of a foreach is, in general, a
risky move.
If you need to make loop indices jump around, you should use a
plain for
loop instead:
for (t=1; t < 51; t++)
{
// modify t at will, just make sure your loop
// condition(s) / loop increments still work correctly.
}
or, if the loop indices are truly wildly jumping around, use a
while
loop:
t = 1;
while (t < 51 /* or whatever condition you may have */)
{
... // Do stuff
t = ... // compute next index to jump to
}
T
Thank you for you response! That's exactly what I was thinking.
It can be really chaotic to make that mistake in a for loop. But
it can be fixed with a temporary variable and reset the value of
the counter at the end of the execution of the loop just before
it gets incremented.
Here is the C version of this program. I made a mistake the first
time I made this version. I left the function as an INT function
and didn't return any value.
On the D version the compiler warned me about that which makes a
lot of sense. I liked that! :D .
S I went and fixed both codes but the D compiler is not doing a
good compilation and i get segmentation fault when I run the D
version.
Finally here's the C code that gives the correct output :
----------------------------------------------------------------------------
#include <stdio.h>
void funcion(int a, int t)
{
int temp, bd, an;
temp=t;
temp*=20;
temp+=402;
temp*=5;
temp+=3;
bd=temp-a;
temp=t;
temp*=5;
temp+=50;
temp*=20;
temp+=1013;
an=temp-a;
printf("%d:%d\n", bd, an);
}
void main()
{
int r, f, count, b;
printf("Input your birth year : ");
scanf("%d", &b);
printf("Input the range of sizes for the calculation (# #) : ");
scanf("%d %d", &r, &f);
for(count=r; count<=f; count++)
{
funcion(b, count);
}
}
--------------------------------------------------------------
