double formatting question

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3.67/5 (3 votes)

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Why am I getting various formats of 0.0 , when I divide

C#

int wins = 3;
int games = 12;
double winPercentage = 0;
winPercentage = wins/games;
TextBlock.Text= winpercentage.ToString("assorted formating experiments");

I am trying to display team win percentages.
All I seem to be able to get is 0;

Posted 30-May-11 7:31am

o1010wanabe

Updated 30-May-11 7:35am

yesotaso

v3

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yesotaso 30-May-11 13:35pm

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2 solutions

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yesotaso · Accepted Answer · 2011-05-30T07:46:00

Solution 1

This has nothing to do with double formatting. Your problem is Integer division. "3/12 = 0.25" which is "0" as integer.
If you tried double wins = 3; or double games = 12; or (double)wins/games or wins/(double)games you'd get it as "0.25".
The division operator would treat both operands as floating point number if you'd supply at least 1 of them as such. But since both operands are integer result does not hold floating point.

Posted 30-May-11 7:46am

yesotaso

v2

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o1010wanabe 30-May-11 13:55pm

Thank you so much for the rapid solution.

yesotaso 30-May-11 13:56pm

No problem.

Sergey Alexandrovich Kryukov 30-May-11 15:44pm

Correct, a 5.
--SA

Tarun.K.S · Accepted Answer · 2011-05-30T07:49:00

Solution 2

Do it like this:

winPercentage = (double)wins/games;

You need to cast it to double.

Posted 30-May-11 7:49am

Tarun.K.S

Comments

o1010wanabe 30-May-11 13:55pm

Thanks a million.

Tarun.K.S 30-May-11 13:56pm

Glad to help! :)

Sergey Alexandrovich Kryukov 30-May-11 15:44pm

Typical mistake. A 5.
--SA

Tarun.K.S 31-May-11 2:36am

Thanks SA. :)