Objective c string formatter for distances

Question

I have a distance as a float and I\'m looking for a way to format it nicely for human readers. Ideally, I\'d like it to change from m to km as it gets bigger, and to round the n

Answer 1

Yes you need to write your own formatter, like

#include 
NSString* convertDistanceToString(float distance) {
    if (distance < 100)
       return [NSString stringWithFormat:@"%g m", roundf(distance)];
    else if (distance < 1000)
       return [NSString stringWithFormat:@"%g m", roundf(distance/5)*5];
    else if (distance < 10000)
       return [NSString stringWithFormat:@"%g km", roundf(distance/100)/10];
    else
       return [NSString stringWithFormat:@"%g km", roundf(distance/1000)];
}
...
NSLog(@"The distance is %@", convertDistanceToString(1024));