Search:

yup, You can prove the floating point has a trucation issue. But I need to prove the array will have different sum if it adds the first one to the last one and vice versa. I just want to find out the...

The question is what is the value for a[i] that can make the result different from the two loops.

I have a floating point question. The following is the source code:

double sum, a[3];
int i;

sum = 0.0;

for (i=0; i < 3; i++)
sum += a[i];
printf("%e\n", sum);