fn main() {
let f1 = 10.50_f64;
let f2 = 20.00_f64;
let f3 = 15.75_f64;
let f4 = 100_i64;
println!("10.50 -> {f1}");
println!("20.00 -> {f2}");
println!("15.75 -> {f3}");
println!("100 (int) -> {f4}");
println!("\nContains '.':");
println!("10.50 contains '.': {}", f1.to_string().contains('.'));
println!("20.00 contains '.': {}", f2.to_string().contains('.'));
println!("15.75 contains '.': {}", f3.to_string().contains('.'));
println!("100 contains '.': {}", f4.to_string().contains('.'));
}