From f5eef4230022efad8d49ed3147fb28a1f361efcc Mon Sep 17 00:00:00 2001 From: rsgl Date: Fri, 15 Nov 2024 00:42:01 +0800 Subject: [PATCH] add calculator --- .gitignore | 2 +- calculator/Cargo.lock | 7 ++ calculator/Cargo.toml | 6 ++ calculator/src/main.rs | 111 ++++++++++++++++++++++ main.rs | 206 ++++++++++------------------------------- 5 files changed, 176 insertions(+), 156 deletions(-) create mode 100644 calculator/Cargo.lock create mode 100644 calculator/Cargo.toml create mode 100644 calculator/src/main.rs diff --git a/.gitignore b/.gitignore index ea8c4bf..eb5a316 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1 @@ -/target +target diff --git a/calculator/Cargo.lock b/calculator/Cargo.lock new file mode 100644 index 0000000..25e57d7 --- /dev/null +++ b/calculator/Cargo.lock @@ -0,0 +1,7 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "calculator" +version = "0.1.0" diff --git a/calculator/Cargo.toml b/calculator/Cargo.toml new file mode 100644 index 0000000..6ee4c31 --- /dev/null +++ b/calculator/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "calculator" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/calculator/src/main.rs b/calculator/src/main.rs new file mode 100644 index 0000000..4dfc5fc --- /dev/null +++ b/calculator/src/main.rs @@ -0,0 +1,111 @@ +use std::io; + +struct Calculator { + first_number: i32, + second_number: i32, +} + +impl Calculator { + /** + * 加法 + */ + fn add(&self) -> i32 { + self.first_number + self.second_number + } + + /** + * 减法 + */ + fn sub(&self) -> i32 { + self.first_number - self.second_number + } + + /** + * 乘法 + */ + fn mul(&self) -> i32 { + self.first_number * self.second_number + } + + /** + * 除法 + */ + fn div(&self) -> i32 { + self.first_number / self.second_number + } +} + +fn main() { + let mut calculator = Calculator { + first_number: 0, + second_number: 0, + }; + loop { + println!("Please Enter Your Algorithm"); + println!("1. add"); + println!("2. sub"); + println!("3. mul"); + println!("4. div"); + println!("5. return"); + let mut algorithm_input = String::new(); + io::stdin() + .read_line(&mut algorithm_input) + .expect("Failed to a line"); + let algorithm_trim = algorithm_input.trim(); + let algorithm: i32; + if let Ok(parsed_value) = algorithm_trim.parse() { + algorithm = parsed_value + } else { + return; + } + + if algorithm == 5 { + return; + } + + println!("Please Enter First Number"); + let mut first_number_input = String::new(); + io::stdin() + .read_line(&mut first_number_input) + .expect("Failed to a line"); + let first_number_trim = first_number_input.trim(); + let first_number: i32; + if let Ok(parsed_value) = first_number_trim.parse() { + first_number = parsed_value + } else { + return; + } + + println!("Please Enter Second Number"); + let mut second_number_input = String::new(); + io::stdin() + .read_line(&mut second_number_input) + .expect("Failed to a line"); + let second_number_trim = second_number_input.trim(); + let second_number: i32; + if let Ok(parsed_value) = second_number_trim.parse() { + second_number = parsed_value + } else { + return; + } + + calculator.first_number = first_number; + calculator.second_number = second_number; + + match algorithm { + 1 => { + println!("add: {}", calculator.add()) + } + 2 => { + println!("sub: {}", calculator.sub()) + } + 3 => { + println!("mul: {}", calculator.mul()) + } + 4 => { + println!("div: {}", calculator.div()) + } + _ => return, + } + } +} diff --git a/main.rs b/main.rs index 457485f..4c11629 100644 --- a/main.rs +++ b/main.rs @@ -1,162 +1,58 @@ +struct Car { + color: String, + transmission: Transmission, + convertible: bool, + age: (Age, u32), +} + +#[derive(PartialEq, Debug)] +enum Age { + New, + Used, +} + +#[derive(PartialEq, Debug)] +enum Transmission { + Manual, + SemiAuto, + Automatic, +} + +fn car_factory(color: String, transmission: Transmission, convertible: bool, miles: u32) -> Car { + Car { + color, + transmission, + convertible, + age: car_quality(miles), + } +} + +fn car_quality(miles: u32) -> (Age, u32) { + if miles > 100 { + return (Age::Used, miles); + } + + (Age::New, miles) +} + fn main() { - let guess: u32 = "42".parse().expect("Not a number!"); - println!("You guessed: {}", guess); - let heart_eyed_cat = '😻'; - println!("{}", heart_eyed_cat); - - let cc = another_function(3, 'a'); - println!("The value of cc is: {}", cc); - - // Statements and Expressions - let x = { - let y = 5; - y + 1 - }; - println!("The value of x is: {}", x); - - for number in 1..4 { - println!("{}!", number); - } - - let result = fibonacci_function(3); - println!("The result is: {}", result); - // 相互转换摄氏与华氏温度 - let celsius = 30.0; - let fahrenheit = celsius_to_fahrenheit(celsius); - println!("{} celsius is {} fahrenheit.", celsius, fahrenheit); - let fahrenheit = 86.0; - let celsius = fahrenheit_to_celsius(fahrenheit); - println!("{} fahrenheit is {} celsius.", fahrenheit, celsius); - - let mut s = String::from("hello"); - s.push_str(", world!"); - println!("{}", s); - - let s2 = s; - println!("{}", s2); - // println!("{}", s); - - let t = String::from("hello"); - takes_ownership(t); - // println!("{}", t); - let y = 5; - makes_copy(y); - println!("{}", y); - - let s4 = String::from("hello"); - let len = calculate_length(&s4); - println!("The length of '{}' is {}.", s4, len); - - // let s5 = String::from("hello"); - // change(&s5); - - let mn = String::from("hello world"); - let word = first_word(&mn); - // mn.clear(); - println!("The first word is: {}", word); - - // let width1 = 30; - // let height1 = 50; - - let rect1 = Rectangle { - width: 30, - height: 50, - }; - dbg!(&rect1); - // println!("rect1 is {:#?}", rect1); - // println!( - // "The area of the rectangle is {} square pixels.", - // area(&rect1) - // ); + println!("Hello, world"); + let colors = ["Blue", "Green", "Red", "Silver"]; + let mut car = car_factory(String::from(colors[0]), Transmission::Automatic, false, 0); println!( - "The area of the rectangle is {} square pixels.", - rect1.area() + "Car order 1: {:?}, Hard top = {}, {:?}, {}, {} miles", + car.age.0, car.color, car.convertible, car.color, car.age.1 ); - let rect2 = Rectangle::square(3); + car = car_factory(String::from(colors[1]), Transmission::SemiAuto, false, 1); println!( - "The area of the rectangle is {} square pixels.", - rect2.area() + "Car order 1: {:?}, Hard top = {}, {:?},{:?}, {}, {} miles", + car.age.0, car.color, car.convertible, car.transmission, car.color, car.age.1 + ); + + car = car_factory(String::from(colors[2]), Transmission::Manual, false, 101); + println!( + "Car order 1: {:?}, Hard top = {}, {:?}, {}, {} miles", + car.age.0, car.color, car.convertible, car.color, car.age.1 ); } - -fn another_function(a: i32, char: char) -> i32 { - println!("Another function."); - println!("The value of a is: {}", a); - println!("The value of char is: {}", char); - 5 -} - -fn fibonacci_function(n: i32) -> i32 { - if n == 0 { - return 0; - } else if n == 1 { - return 1; - } else { - return fibonacci_function(n - 1) + fibonacci_function(n - 2); - } -} - -fn celsius_to_fahrenheit(celsius: f64) -> f64 { - celsius * 1.8 + 32.0 -} - -fn fahrenheit_to_celsius(fahrenheit: f64) -> f64 { - (fahrenheit - 32.0) / 1.8 -} - -fn takes_ownership(some_string: String) { - // some_string 进入作用域 - println!("{some_string}"); -} // 这里，some_string 移出作用域并调用 `drop` 方法。 - // 占用的内存被释放 - -fn makes_copy(some_integer: i32) { - // some_integer 进入作用域 - println!("{some_integer}"); -} // 这里，some_integer 移出作用域。没有特殊之处 - -fn calculate_length(s: &String) -> usize { - s.len() -} - -// fn change(some_string: &String) { -// some_string.push_str(", world"); -// } - -fn first_word(s: &String) -> &str { - let bytes = s.as_bytes(); - - for (i, &item) in bytes.iter().enumerate() { - if item == b' ' { - return &s[..i]; - } - } - - &s[..] -} - -// fn area(width: u32, height: u32) -> u32 { -// width * height -// } - -#[derive(Debug)] -struct Rectangle { - width: u32, - height: u32, -} - -impl Rectangle { - fn area(&self) -> u32 { - self.width * self.height - } -} - -impl Rectangle { - fn square(size: u32) -> Rectangle { - Rectangle { - width: size, - height: size, - } - } -}