2022-02-25 01:41:07 -06:00
|
|
|
# 函数
|
2022-03-02 08:11:56 -06:00
|
|
|
1. 🌟🌟🌟
|
2022-02-25 01:41:07 -06:00
|
|
|
```rust,editable
|
|
|
|
|
|
|
|
fn main() {
|
|
|
|
// 不要修改下面两行代码!
|
|
|
|
let (x, y) = (1, 2);
|
2022-03-02 02:27:16 -06:00
|
|
|
let s = sum(x, y);
|
2022-02-25 01:41:07 -06:00
|
|
|
|
|
|
|
assert_eq!(s, 3);
|
|
|
|
}
|
|
|
|
|
|
|
|
fn sum(x, y: i32) {
|
|
|
|
x + y;
|
|
|
|
}
|
|
|
|
```
|
|
|
|
|
|
|
|
|
2022-03-02 08:11:56 -06:00
|
|
|
2. 🌟🌟
|
2022-02-25 01:41:07 -06:00
|
|
|
```rust,editable
|
|
|
|
fn main() {
|
|
|
|
print();
|
|
|
|
}
|
|
|
|
|
|
|
|
// 使用另一个类型来替代 i32
|
|
|
|
fn print() -> i32 {
|
|
|
|
println!("hello,world");
|
|
|
|
}
|
|
|
|
```
|
|
|
|
|
|
|
|
|
2022-03-02 08:11:56 -06:00
|
|
|
3. 🌟🌟🌟
|
2022-02-25 01:41:07 -06:00
|
|
|
|
|
|
|
```rust,editable
|
2022-03-02 02:27:16 -06:00
|
|
|
// 用两种方法求解
|
2022-02-25 01:41:07 -06:00
|
|
|
fn main() {
|
|
|
|
never_return();
|
|
|
|
}
|
|
|
|
|
|
|
|
fn never_return() -> ! {
|
|
|
|
// 实现这个函数,不要修改函数签名!
|
|
|
|
|
|
|
|
}
|
2022-03-01 08:06:38 -06:00
|
|
|
```
|
|
|
|
|
|
|
|
> 你可以在[这里](https://github.com/sunface/rust-by-practice)找到答案(在 solutions 路径下)
|