[Info-vax] decrementing & for loops in C

[vaxinf at chemie.uni-konstanz.de]

Hi,

I tried to run one of the example found on Jim Duff's homepage and
found a behavior of for loops written in C:

int main (void) {

int i,sum=0,n=10;

    (void)printf ("Starting countdown loop...\n");
    (void)fflush (stdout);
    for (i = n; i = 0; i--) {
        (void)printf (" i: %i\n",i);
    }
    (void)printf ("done.\n");

    (void)printf ("Starting normal loop...\n");
    (void)fflush (stdout);
    for (i = 1; i <= n; i++) {
        (void)printf (" i: %i\n",i);
    }
    (void)printf ("done.\n");
}

Here is the output:

r SYSWRITE_TST
Starting countdown loop...
done.
Starting normal loop...
 i: 1
 i: 2
 i: 3
 i: 4
 i: 5
 i: 6
 i: 7
 i: 8
 i: 9
 i: 10
done.

So the countdown loop is ignored. g++ under linux behaves the same.

Are there any references that one cannot use decrementation and for
loop in C?

regards
Eberhard