%g gives Exponential Form of Value in ios

Question

My Requirement

There is one label having Price Value (Float Value)

If it is -> Then It should be

1232.200 -> 1232.2

1232.243 -> 1232.243

1232.00 -> 1232

What I had Done till Now

1) Used %.2f

lblPrice.text=[NSString stringWithFormat:@"%.2f",myValue];

But it always give 2 digits after points like 1232.20, 1232.24, 1232.00 Respectively...

2) So then I change %.2f to %g

lblPrice.text=[NSString stringWithFormat:@"%g",myValue];

That Gives Perfect Value for all The above requirement, But when the value exceeds to some level , It is converted to exponential form like this..

If myValue is 1189243.609 then It results in 1.18924e+06 Which I don't want..

Any Solution for this??? Thanks in Advance..

Have you tried using ceilf() in case you want to round up float values? — Rishab, Jun 27 '16 at 06:20
I dont want to round up float value, If there is precision Then there should be float ... @Rishab — Sneha, Jun 27 '16 at 06:21

Nitin Gohel · Accepted Answer · 2016-07-19T11:35:39.703

2

I just test the following code and that work as per your requirement hope that help:

NSNumberFormatter *NumberFormate = [[NSNumberFormatter alloc] init];
[NumberFormate setRoundingIncrement:[NSNumber numberWithDouble:0.001]];
[NumberFormate setMaximumFractionDigits:4];
[NumberFormate setMinimumFractionDigits:0];

NSLog(@"232.200 IS %@", [NumberFormate stringFromNumber:[NSNumber numberWithFloat:1232.200]]);
NSLog(@"1232.243 IS %@", [NumberFormate stringFromNumber:[NSNumber numberWithFloat:1232.243]]);
NSLog(@"1232.00 IS %@", [NumberFormate stringFromNumber:[NSNumber numberWithFloat:1232.00]]);

It's output is :

UPDATE:

For your 0.50 if you want to output like 0.5 then just add one more line in your existing code like following.

[NumberFormate setNumberStyle:NSNumberFormatterDecimalStyle];

edited Jul 19 '16 at 11:35

answered Jun 27 '16 at 11:18

Nitin Gohel

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2

I found the same solution... & It worked.. Thanks Anyway ... :) – Sneha Jun 27 '16 at 11:21
This solution gives me .5 for 0.50 value... How to get 0.5 instead of .5? @Nitin Gohel – Sneha Jul 19 '16 at 11:20
1

@Sam check updated answer you need to add `[NumberFormate setNumberStyle:NSNumberFormatterDecimalStyle];` – Nitin Gohel Jul 19 '16 at 11:35

score 1 · Answer 2 · answered Jun 27 '16 at 06:48

You can try both of this one by one

lblPrice.text = [NSString stringWithFormat:@"%qi", myValue];

or

lblPrice.text = [NSString stringWithFormat:@"%.0f", myValue];

Or View the following link

https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html

%g gives Exponential Form of Value in ios

2 Answers2