ios - Possibly to set float digit precision in display string dynamically without NSNumberFormatter? -


i know how format float when displaying part of nsstring (see e.g. make float show 2 decimal places) there way dynamically set number of decimal digits displayed? example, if know want int dig digits can modify following expression format float desired?

nsstring* formattednumber = [nsstring stringwithformat:@"%.02f", myfloat];

i know can nsnumberformatter, i'm looking more direct method.

see ieee printf specification need know format specifiers.

you want:

int dig = 4; // example nsstring *formattednumber = [nsstring stringwithformat:@"%.*f", dig, myfloat];

dig used * indicate number of digits after decimal point.


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