Divide NSUInteger by 100

Question

I have an NSUInteger and i want to divide it by 100. So lets say i have the number 1 in an NSUInteger i want to divide it by 100 and get 0.01 as the result.

(float) percent / 100

percent is an NSUInteger

I agree with Max, the example provided appears syntactically correct although the result is ununsed. — Joe, Aug 15 '12 at 21:53

Jody Hagins · Accepted Answer · 2012-08-15T22:10:06.270

5

When dividing two integers, the result will be an integer. Make one of them a float (the constant is typical)

float percent = grade / 100.0f;

edited Aug 15 '12 at 22:10

answered Aug 15 '12 at 21:49

Jody Hagins

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Surely that's a double? `NSLog(@"%zd %zd", sizeof(100.0), sizeof(100.0f)); //=> 8 4` – Paul.s Aug 15 '12 at 21:52

Joe · Answer 2 · 2012-08-15T21:58:45.857

Your example looks fine since you are casting percent as a float. The rule of thumb to remember is to get a floating point value you have to divide by a floating point number. This means either both numbers are a floating point number or one of the numbers are floating point. Either of the following scenarios would solve your problem.

//I recommend the first option
float percentage = percent / 100.0f;
float percentage = (float)percent / 100.0f;
float percentage = (float)percent / 100;

Divide NSUInteger by 100

2 Answers2