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原生类型1: exercises/primitive_types/primitive_types1.rs
题目
rust
// primitive_types1.rs
//
// Fill in the rest of the line that has code missing! No hints, there's no
// tricks, just get used to typing these :)
//
// Execute `rustlings hint primitive_types1` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
fn main() {
// Booleans (`bool`)
let is_morning = true;
if is_morning {
println!("Good morning!");
}
let // Finish the rest of this line like the example! Or make it be false!
if is_evening {
println!("Good evening!");
}
}
填充代码中缺失的行。
题目解析
注释里面说,需要补充这一行代码,并且让它是false。
所以我们需要对is_evening
进行初始化和赋值。
rust
fn main() {
// Booleans (`bool`)
let is_morning = true;
if is_morning {
println!("Good morning!");
}
let // Finish the rest of this line like the example! Or make it be false!
let is_evening = false; // Finish the rest of this line like the example! Or make it be false!
if is_evening {
println!("Good evening!");
}
}