Format a float to display in a string with two digits?

Question

NSString *timerend = [[NSString alloc] initWithFormat:@"%.0f:%.0f:%02d", hours, minutes, seconds];

So I have this string and a bunch of floats. For example, say seconds = 6.54. It will display as that. I want it to display as 06.54. Is there anyway to do that? Any help with be greatly appreciated.

Answer 1

Assuming you want the format 'XX:XX:XX.XX' you can use the following code:

    NSString *timerend = [[NSString alloc] initWithFormat:@"%02.0f:%02.0f:%05.2f", hours, minutes, seconds];

When formatting float the number before the point (05) determines the minimum total characters in the entire string, not just the bit before the point.

Answer 2

One way to approach is to have a separate NSString having content 0 and append it with timerend . There might even be other better solutions.

NSString *startTag = @"0";
// Your string variable. i.e., timerend

NSString *newTime = [startTag stringByAppendingString:timerend];

However, you need to append only when the hour is less than 10.