pull/116/head
unknown 3 years ago
parent 870c198982
commit e00febf876

@ -10,6 +10,6 @@ fn main() {
fn call_me(num:) {
for i in 0..num {
println!("Ring! Call number {}", i + 1);
println!("Ring! Call number {}", i + 1);// 译:"叮!呼叫号码 {}"
}
}

@ -1,8 +1,9 @@
// functions3.rs
// Make me compile! Execute `rustlings hint functions3` for hints :)
// 让我能够编译!执行 `rustex hint functions3` 获取提示 :)
// I AM NOT DONE
/// 翻译: [mg-chao](https://github.com/mg-chao)
fn main() {
call_me();
}

@ -1,14 +1,15 @@
// functions4.rs
// Make me compile! Execute `rustlings hint functions4` for hints :)
// 让我能够编译!执行 `rustex hint functions4` 获取提示 :)
// This store is having a sale where if the price is an even number, you get
// 10 Rustbucks off, but if it's an odd number, it's 3 Rustbucks off.
// 商店正在进行促销,如果价格是偶数,可以优惠 10 Rustbucks如果是奇数则优惠 3 Rustbucks。
// Rustbucks 可能想表达 Rust元 的意思,好比 美元 。
// I AM NOT DONE
/// 翻译: [mg-chao](https://github.com/mg-chao)
fn main() {
let original_price = 51;
println!("Your sale price is {}", sale_price(original_price));
println!("Your sale price is {}", sale_price(original_price));// 译:"你需支付 {}"
}
fn sale_price(price: i32) -> {

@ -1,11 +1,12 @@
// functions5.rs
// Make me compile! Execute `rustlings hint functions5` for hints :)
// 让我能够编译!执行 `rustex hint functions5` 获取提示 :)
// I AM NOT DONE
/// 翻译: [mg-chao](https://github.com/mg-chao)
fn main() {
let answer = square(3);
println!("The answer is {}", answer);
println!("The answer is {}", answer);// 译:"答案是 {}"
}
fn square(num: i32) -> i32 {

@ -87,37 +87,35 @@ name = "functions2"
path = "exercises/functions/functions2.rs"
mode = "compile"
hint = """
Rust `call_me` `num` """
Rust signature `call_me` `num` """
[[exercises]]
name = "functions3"
path = "exercises/functions/functions3.rs"
mode = "compile"
hint = """
This time, the function *declaration* is okay, but there's something wrong
with the place where we're calling the function."""
, *declaration* """
[[exercises]]
name = "functions4"
path = "exercises/functions/functions4.rs"
mode = "compile"
hint = """
The error message points to line 14 and says it expects a type after the
`->`. This is where the function's return type should be-- take a look at
the `is_even` function for an example!"""
15 `->`
`is_even` """
[[exercises]]
name = "functions5"
path = "exercises/functions/functions5.rs"
mode = "compile"
hint = """
This is a really common error that can be fixed by removing one character.
It happens because Rust distinguishes between expressions and statements: expressions return
a value based on its operand, and statements simply return a () type which behaves just like `void` in C/C++ language.
We want to return a value of `i32` type from the `square` function, but it is returning a `()` type...
They are not the same. There are two solutions:
1. Add a `return` ahead of `num * num;`
2. remove `;`, make it to be `num * num`"""
Rust operand,
`()` C/C++ `void`
`square` `i32` `()` ...
1. `num * num;` `return`
2. `;` `num * num`"""
# IF

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