borrowing and referrencing day one

src/main.rs

@@ -1,54 +1,27 @@
 fn main() {
-    
-    // This is an example of variable shadowing
-    let _variable_one = "new string";
-    let _variable_one = _variable_one.to_owned() + "second string";
-    println!("Hello, world!");
-
-    let _array_one: [i32; 4] = [1,3,4,5];
-    let _arrays = [4,5,45,5,5,5];
-    let _tuple_one = (3,5,5,"fdsfd");
-
-    let _array_pointer: &[i32] = &[1,3,4,5,6,6];
-
-    let string_slice : &[String] = &["test string one ".to_string(), "this is the second string".to_string()];
-    println!("this is a reference to a string array {:?}", string_slice);
-
-    let mut string_owned :String = String::from("hello rust");
-    let string_borrowed: &str = &string_owned;
-    println!("this is the borrowed string {}", string_borrowed);
-    string_owned.push_str("string");
-    println!("this is the borrowed string value now {}", string_owned);
-
-
-
-    let x = {
-        let first: i32 = 67;
-        let second = 54;
-        first * second
+    let mut rezon_account = BackAccount {
+        name : "riZzon".to_string(),
+        balance : 6969.68,
     };
-    let y = 56;
-
-    println!("the is the value of the expression evaluated: {:?}", x);
-
-
-    println!("this is the value of a function expression evaluating to {:?}", add(x, y));
-
-
-    let string_one_owner : String = String::from("im the ownee");
-    println!("The size of string {} is {}.", string_one_owner, get_string_len(&string_one_owner));
-    let _string_two_one_owner = string_one_owner;
-    println!("this is the original owner : {}", string_one_owner);
-    println!("this is the new owner : {}", _string_two_one_owner);
-
 
+    rezon_account.check_balance();
+    rezon_account.withdraw(34.4);
+    rezon_account.check_balance();
 }
 
 
-fn add (first :i32, second: i32) -> i32 {
-    first * second
+struct BackAccount {
+    name: String,
+    balance: f32,
 }
 
-fn get_string_len(str :&String) -> usize {
-    str.len()
+impl BackAccount {
+    fn check_balance(&self) {
+        println!("the user {}, has a current account balance of {}", self.name, self.balance)
+    }
+
+    fn  withdraw(&mut self, amount: f32) {
+        println!("withdrawing an amount of {}, from {} user's  balance ", amount, self.name);
+        self.balance -= amount
+    }
 }