How can I print the integer part of a floating point number with 2 digits using leading zeros in Rust?

Question

How do I format 5.0 into 05.0%? Using {:02.2} does not seem to work; it does the same as {.2}.

Answer 1

https://doc.rust-lang.org/std/fmt/#width

fn main() {
    println!("{:04.1}%", 5.0);
}

prints

05.0%

which is padded to a length of 4 characters including the decimal point. Your example would be padded to length 2, but already has length 3, thus nothing changes.