CODEWITHSUNDEEP
iphonenstimeintervalmodulus
Jerry
Jerry

Reputation: 537

Using mod operator in iOS app

I have an NSTimeInterval that is stored as a double. I would like to get the amount of minutes that are inide of the second value using the % operator.

minutes = secondValue % 60;

where minutes is declared as double minutes

The result is that XCode says "Invalid operands to binary %"

Thoughts?

Upvotes: 8

Views: 34482

Answers (3)

AlcubierreDrive
AlcubierreDrive

Reputation: 3664

The OP changed their question, so here is my new answer:

You want to do minutes = floor(secondsValue) / 60; You want int division, not modulus.

Upvotes: 12

hotpaw2
hotpaw2

Reputation: 70703

If secondValue is a float or double, you can use C type casting:

minutes = ((int)secondValue) % 60;

EDIT:

(If secondValue is too big to fit in an int, this won't work. So you need to know that the range of your value is appropriate.)

Upvotes: 4

Carl Norum
Carl Norum

Reputation: 224962

From the C standard, section 6.5.5 Multiplicative operators, paragraph 2:

The operands of the % operator shall have integer type.

Upvotes: 13

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