rustHow to format float string in Rust

Formatting a float string in Rust can be done using the format! macro. This macro takes a format string and a list of arguments and returns a String object. The format string can contain special formatting characters that will be replaced with the corresponding argument.

For example, to format a float string with two decimal places, the following code can be used:

let x = 3.14159;
let formatted_string = format!("{:.2}", x);
println!("{}", formatted_string);

Output

3.14

Explanation:

1. The let x = 3.14159 statement declares a variable x and assigns it the value 3.14159.
2. The let formatted_string = format!("{:.2}", x) statement uses the format! macro to create a String object with the value 3.14 from the float x. The {:.2} part of the format string specifies that the float should be formatted with two decimal places.
3. The println!("{}", formatted_string) statement prints the formatted string to the console.

Helpful links:

1. https://doc.rust-lang.org/std/macro.format.html
2. https://doc.rust-lang.org/std/fmt/index.html

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