tuple struct

day04/src/main.rs

@@ -5,6 +5,10 @@ struct User {
     active: bool,
 }
 
+struct RGB(i32, i32, i32);
+
+struct RGBA(i32, i32, i32, f32);
+
 fn main() {
     let username = String::from("jingxun");
     let email = String::from("jingxun@lynchow.com");
@@ -50,6 +54,13 @@ fn main() {
         buser.sign_in_count,
         buser.email
     );
+    let black = get_color(0, 0, 0);
+    println!("The value of black is rgb({},{},{})", black.0, black.1, black.2);
+    let blank_img = get_color_rgba(0,0,0,0.);
+    println!(
+        "The value of blank img is rgba({},{},{},{})",
+        blank_img.0,blank_img.1,blank_img.2,blank_img.3
+    );
 }
 
 fn new_user(user: &String, mail: &String, flag: bool, count: u64) -> User {
@@ -97,15 +108,23 @@ fn other_user(user: &String, mail: &String, flag: bool, count: u64) -> User {
     }
 }
 
-fn other_user2(user: &String, mail: &String, flag: bool, count: u64)->User{
+fn other_user2(user: &String, mail: &String, flag: bool, count: u64) -> User {
     let user1 = User {
         email: String::from(mail),
         username: String::from(user),
         active: flag,
         sign_in_count: count,
     };
-    User{
-        active:false,
+    User {
+        active: false,
         ..user1
     }
+}
+
+fn get_color(red: i32, green: i32, blue: i32) -> RGB {
+    RGB(red, green, blue)
+}
+
+fn get_color_rgba(red: i32, green: i32, blue: i32, alpha: f32) -> RGBA {
+    RGBA(red, green, blue, alpha)
 }