How to round off a double value to the next integer value in Objective-C?

Question

I know it's quite a silly question, but I really am finding the solution for the same. Suppose I am having a variable, db1, with a value 4.166667, and I want to convert it to an integer with the value 5. How should I do that?

http://en.wikipedia.org/wiki/Floor_and_ceiling_functions – Luigi Jan 11 '11 at 11:32 — Luigi, Jan 11 '11 at 11:32

score 3 · Accepted Answer · answered Jan 11 '11 at 11:33

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#include <math.h>

int db1_int = (int)ceil(db1);

answered Jan 11 '11 at 11:33

Paul R

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score 1 · Answer 2 · answered Jan 11 '11 at 11:33

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You can round it using the ceil function found in math.h.

double notRounded = 4.1666667
int rounded = (int)ceil(notRounded);

Don't forget to #include <math.h>

answered Jan 11 '11 at 11:33

DanielGibbs

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score 0 · Answer 3 · edited May 23 '17 at 12:04

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See Stack Overflow question Is there a function to round a float in C or do I need to write my own?.

Objective-C works on top of C, so you can use this code.

edited May 23 '17 at 12:04

Community

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answered Jan 11 '11 at 11:33

Robin

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I wanted to round it off to next integer value,so above function will be helpful. – Yama Jan 11 '11 at 11:43

How to round off a double value to the next integer value in Objective-C?

3 Answers3