How to trim zeros after decimal point

Question

I am trying to trim zeros after a decimal point as below but it\'s not giving desired result.

trig = [currentVal doubleValue];
trig = trig/100;
NSNumberForma         


        

Answer 1

In case this helps someone. I wanted 1 decimal value but no '.0' on the end if the float was '1.0'. Using %g would give scientific notation for longer numbers, following ugliness worked well enough for me as high accuracy wasn't critical.

// Convert to 1 dp string,
NSString* dirtyString = [NSString stringWithFormat: @"%.1f", self.myFloat];

// Convert back to float that is now a maximum of 1 dp,
float myDirtyFloat = [dirtyString floatValue];

// Output the float subtracting the zeros the previous step attached
return [NSString stringWithFormat: @"%g", myDirtyFloat];