This sample program that I wrote using Rust as my programming language will ask the user to give a year and then our program will determine whether the given year by our user is leap year or not a leap year.
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My mobile number here in the Philippines is 09173084360.
Sample Program Output
Program Listing
leap_year.rs
// Leap Year Checker in Rust Programming language.
// Written By: Mr. Jake R. Pomperada, MAED-IT
// July 17, 2016
use std::io::{self, Write};
use std::fmt::Display;
use std::process;
fn main() {
println!("\n");
println!("\tLeap Year Checker in Rust");
println!("\n");
let year: i32 = grab_input("Enter a Year ")
.unwrap_or_else(|e| exit_err(&e, e.raw_os_error().unwrap_or(-1)))
.trim()
.parse()
.unwrap_or_else(|e| exit_err(&e, 2));
if year % 400 == 0 {
println!("\n");
println!("The year {} is a leap year.",year);
}
else if year % 100 == 0 {
println!("\n");
println!("The year {} is a leap year.",year);
}
else if year % 4 == 0 {
println!("\n");
println!("The year {} is a leap year.",year);
}
else {
println!("\n");
println!("The year {} is not a leap year.",year);
}
println!("\n");
println!("End of Program");
}
fn grab_input(msg: &str) -> io::Result<String> {
let mut buf = String::new();
print!("{}: ", msg);
try!(io::stdout().flush());
try!(io::stdin().read_line(&mut buf));
Ok(buf)
}
fn exit_err<T: Display>(msg: T, code: i32) -> ! {
let _ = writeln!(&mut io::stderr(), "Error: {}", msg);
process::exit(code)
}
