Round double value to 2 decimal places

Question

I have a double value as 22.368511 I want to round it to 2 decimal places. i.e. it should return 22.37

How can I do that?

Answer 1

As in most languages the format is

%.2f 

you can see more examples here

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Edit: I also got this if your concerned about the display of the point in cases of 25.00

{     NSNumberFormatter *fmt = [[NSNumberFormatter alloc] init];     [fmt setPositiveFormat:@"0.##"];     NSLog(@"%@", [fmt stringFromNumber:[NSNumber numberWithFloat:25.342]]);     NSLog(@"%@", [fmt stringFromNumber:[NSNumber numberWithFloat:25.3]]);     NSLog(@"%@", [fmt stringFromNumber:[NSNumber numberWithFloat:25.0]]); } 

2010-08-22 15:04:10.614 a.out[6954:903] 25.34 2010-08-22 15:04:10.616 a.out[6954:903] 25.3 2010-08-22 15:04:10.617 a.out[6954:903] 25