网页制作专业必备_深圳市网络营销推广平台_seo免费外链工具_关键词排名点击工具

fn main() {test(5,-6);test2();let five_num =  five(78); println!("five funcation's result is {}",five_num) //600
}fn test(x:i32,y:i32){println!("test_fn x is {}",x); // 5println!("test_fn y is {}",y); // -6
}fn test2(){let a ={let x = 4;x + 1 };println!("test2_result is {}",a);  // 5
}fn five(x:i32)->i32 {522 + x
}

https://hardocs.com/d/rustprimer/function/statement_expression.html