Hello,
Im trying to work on a small script for a formula converting temperatures, Celsius to fahrenheit.
I have a formula, and it works.... it works every way I try it. But it keeps giving me the wrong results every time with expr.
The formula for C to F would be:
divide by 5, multiply by 9, add 32.
So..... simple code here
The problem is, its never correct because expr can't seem to add the decimals right.
For instance 32 degrees celcius. f=`expr 32 / 5 \* 9 + 32` gives me 86 for some reason. It should give 89 (or 89.6)
I have also tried it another way, which seems odd, but still should give correct results.
Again, I have tested, it should be 89, but it ends up giving me 64.
Because expr 9 / 5 is giving me 1, instead of 1.8
So 1 * 32 = 32 + 32 = 64.
It should be 1.8 * 32 = 57.6 + 32 = 89.6
It seems like my problem is the fact that expr won't account for decimals.
Is there a way to get it to acknowledge the decimals?
Or is this not possible with the expr command?
Thanks a lot
Last edited by Scrutinizer; 12-14-2012 at 01:20 AM..
Reason: code tags
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