保持数字相同的长度

Question

I'm completing an example involving a clock, so I'm working with integers between 0 and 60 in some cases, and 0 and 12 in others. I need the length of each number to be two digits long, even when the value is less than 10.

For example

0  => 00
2  => 02
10 => 10
etc

I want to have them formatted, but not necessarily to print them out. What's the easiest way to achieve this?

Answer 1

This is probably what you want:

fmt.Printf("%02d", number)

Have a look at fmt's documentation to understand how it works.