fn main() {
println!("Hello, world!");
let x=1;
let mut y=2;
println!("{}-{}",x,y);
y=3;
println!("{}",y);
}
加上mut表示可变绑定
F:\learn>mkdir rustlearn
F:\learn>cd rustlearn
rustc learn1.rs
.\learn1.exe
fn main() {
println!("Hello, world!");
let x=1;
let mut y=2;
println!("{}-{}",x,y);
y=3;
println!("{}",y);
}
加上mut表示可变绑定
F:\learn>mkdir rustlearn
F:\learn>cd rustlearn
rustc learn1.rs
.\learn1.exe