CODEWITHSUNDEEP
c#
Pacha
Pacha

Reputation: 1526

Join 2 integers (integral and decimal part) to a double in C#

Consider the following code:

int integralPart = 123;
int decimalPart = 12345;
// double desiredDouble = 123.12345;

I would like to create a double from 2 ints, as shown in the example.

I know I can use double.Parse(integralPart.ToString() + "." + decimalPart.ToString()), but I am getting some exceptions if the application isn't using English as default language.

Upvotes: 1

Views: 743

Answers (2)

sehe
sehe

Reputation: 393557

From your wording alone, I'd suggest you really wanted to use decimals:

int integralPart = 123;
int decimalPart = 12345;

decimal result = decimalPart;
while (result>=1m) result/=10m; // CAVEAT: see below

result+=integralPart;

Oops. And there is the big ambiguity problem others have mentioned. Likely, you'd need to replace my while with a fixed scale:

result = integralPart + decimalPart / 1000000m; // fixed scale factor

Upvotes: 2

It'sNotALie.
It'sNotALie.

Reputation: 22804

A fix to your solution: 

double.Parse(integralPart.ToString() + "." + decimalPart.ToString(),
    CultureInfo.InvariantCulture);

It's not very efficient, though.

If they are prices, use decimal instead:

decimal.Parse(integralPart.ToString() + "." + decimalPart.ToString(),
    CultureInfo.InvariantCulture);

Upvotes: 2

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