fn main() {
    println!("{:?}", {
        format!("{:E}", 10)
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (file:///playground)
error[E0277]: the trait bound `{integer}: std::fmt::UpperExp` is not satisfied
 --> src/main.rs:5:25
  |
5 |         format!("{:E}", 10)
  |                         ^^ the trait `std::fmt::UpperExp` is not implemented for `{integer}`
  |
  = help: the following implementations were found:
            <&'a T as std::fmt::UpperExp>
            <&'a mut T as std::fmt::UpperExp>
            <f32 as std::fmt::UpperExp>
            <f64 as std::fmt::UpperExp>
  = note: required by `std::fmt::UpperExp::fmt`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
error: Could not compile `playground`.

To learn more, run the command again with --verbose.

*/

/* ~~~~=== stdout ===~~~~

*/