32 wiersze
1.0 KiB
Rust
32 wiersze
1.0 KiB
Rust
use std::io::{self, Write};
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use std::f64;
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fn main() {
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println!("Let's print some lines:");
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println!();
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println!("Hello, world!");
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println!("{}, {}!", "Hello", "world");
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println!("Arguments can be referred to by their position: {0}, {1}! and {1}, {0}! are built from the same arguments", "Hello", "world");
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println!("Furthermore the arguments can be named: \"{greeting}, {object}!\"", greeting = "Hello", object = "World");
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println!("Number formatting: Pi is {0:.3} or {0:.0} for short", f64::consts::PI);
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println!("... and there is more: {0:>0width$}={0:>width$}={0:#x}", 1535, width = 5);
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print!("Printing without newlines ... ");
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println!("is great");
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let _ = write!(&mut io::stdout(), "Underneath, it's all writing to a stream...");
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println!();
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println!("Write something!");
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let mut input = String::new();
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if let Ok(n) = io::stdin().read_line(&mut input) {
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println!("You wrote: {} ({} bytes) ", input, n);
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}
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else {
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eprintln!("There was an error :(");
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}
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}
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