Types - Integers & Double

[keithh]

I have the following line of code:

x = y - (1/(z+1)) * B,

where x, y, z, and B are integers.

What is the proper way to make sure x is computed accurately?

Thanks.

[Athar]

double x=y - (1/double(z+1)) * B,
Floating point numbers aren't perfectly accurate, though.

[keithh]

but x has to be an integer. so do i need to recast it if doing as u suggest? also since it has to be an integer, the accuracy is only needed to an integer. i just got a warning on conversions so am trying to fix that.

[Duthomhas]

Assigning a floating-point value to an integer saves only the integer part of the value.
If you want to do some rounding, you'll have to use a little arithmetic.
http://www.cplusplus.com/forum/articles/3638/
Hope this helps.

[keithh]

the syntax at least is giving me an error on the above suggestion.

[jsmith]

x = static_cast<int>( y - ( 1 / ( z + 1.0 ) ) * B );