摘要： 
1. if语句 下面看一个示例： fn main() { let number = 6; if number % 4 == 0 { println!("number is divisible by 4"); } else if number % 3 == 0 { println!("number i 阅读全文
1. if语句 下面看一个示例： fn main() { let number = 6; if number % 4 == 0 { println!("number is divisible by 4"); } else if number % 3 == 0 { println!("number i 阅读全文