Format Number String, To Many trailing/numbers/ Zeros

Question

I have a simple calculation

float x = ([_enterValue.text floatValue]);
//known constant number
float y = (My value here);
[_resultTxt setText:[NSString stringWithFormat:@"%f", x * y]];

The resulting stringWithFormat has a lot of zeros ie. 1.806700000000

How would I go about formatting this so my string is simply something like 1.8

Do not use stringFormat for decimal numbers shown to a user. You really should use NSNumberFormatter so the number is properly formatted for the user's locale. Many people in Europe, for example, want to see 1,8, not 1.8. — rmaddy
– rmaddy, Commented Dec 17, 2012 at 19:24
Thanks for the tip Maddy, im in UK and we always use the decimal point but thats a good heads up for future apps, thanks — JSA986
– JSA986, Commented Dec 17, 2012 at 19:44

user529758 · Accepted Answer · 2012-12-17 19:19:59Z

2

Try this:

[NSString stringWithFormat:@"%.1f", x * y]

The number after the decimal denotes the number of decimal places to be printed.

answered Dec 17, 2012 at 19:19

user529758

Sign up to request clarification or add additional context in comments.

1 Comment

JSA986 Over a year ago

Wow that was quick and really helpful! Thanks for explaining it to, will mark as correct when it lets me, plus 1 for fast answer!

Collectives™ on Stack Overflow

Format Number String, To Many trailing/numbers/ Zeros

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related