Possible Duplicate:
NSString representation of fractions using unicode
Using Fractions On Websites
I am porting my application from android to IOS. In my android app i use this code to display fractions
Html.fromHtml("<sup>" + top + "</sup>/<sub>" + bottom + "</sub>");
But I dont know how to do this in iOS
Hers what the Html code above looks like in android see the picture

If I am correct that you are asking for formatting a string, then please find the answer below.
Considering the values as float,
And you can set the value to UILabel for showing purpose.