Divide in C# with incorrect result

Asked Jun 18 '13 at 19:32

Active Jun 18 '13 at 19:32

Viewed 97 times

I have problem with some divide constructs in C#. When i try to divide 2 numbers i always get result of zero what is incorrect result.

I have code like this.

double a = 100 / 1500;

I get result of a=0; If i use

double a = 100d / 1500d;

I got correct result. Where is problem in case 1 ? Can someone explain to me difference ?

edited Jun 18 '13 at 19:32

John Saunders

asked Jun 18 '13 at 19:32

Peter M.

3

It's doing integer division. Cast to double: `(double)100/1500`. See http://stackoverflow.com/q/661028/56778 – Jim Mischel Jun 18 '13 at 19:33
1

Integer division always truncates. – Matt Burland Jun 18 '13 at 19:34
1

FWIW `double a = 100 / 1500d;` also avoids integer division; only the denominator needs the double suffix (d). – Andy G Jun 18 '13 at 19:39

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