What's the difference?

Programming Questions

hondaman9..

in Programming Questions • 1 year ago

What am I missing here....?

I have a line of code. This version works:

GY=((pointPaths[i][j].y/275)+(BoxY[q]/100)+(.65));

But this version doesn't

GY=((pointPaths[i][j].y/275)+(BoxY[q]/100)+(65/100));

The (65/100) is enumerating to zero(!?). Why does it not compute to .65? The two lines are identical except for one has the value 0.65 typed in while the other (non-working) one has the math (65/100). Are these not the exact same - why am I getting different results?

Your help is very much appreciated.

Replies(2)

tfguy44

Re: What's the difference?

1 year ago

65/100 is 0

This is because what you are doing is integer division, which drops the remainder.

It does not result in a floating point number, but rather an integer!
There is a difference between actual math division and what the / sign does!

Instead, try:

65/100.0

65/100f

65/float(100)

all of which mean the same thing.

hondaman9..

Re: What's the difference?

1 year ago

Duh! - <slapping forehead!> - of course

Thank you SO much tfguy44. That's one of those simple obvious issues that I fear I could have stared at for days and not spotted the root cause. Thank you for the quick solution.