In addition to strings, we can also print numbers that are specified by {}.
For example:
fn main() {
println!("{}", 123);
}Output:
123
The numbers can be replaced with arithmetic expressions.
fn main() {
println!("{}", 2 + 4 * 3);
}Output:
14
The expressions can be combined with a formatted text.
fn main() {
println!("{} x {} = {}", 14, 9, 14 * 9);
}Output:
14 x 9 = 126
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