add ownership and borrowing testing

ownership/src/main.rs

@@ -0,0 +1,34 @@
+fn main() {
+    let a ="Hello".to_string();
+    let b = a;
+
+    //println!("{}",a); This will error because a no longer owns the string
+    println!("{}",b);
+
+    //simple types like number characters and booleans are copied not moved
+    let c = 5;
+    let d = c;
+    println!("{}",c);
+    println!("{}",d);
+
+    // when ownership does not need to be moved clone can be used.
+    let e ="Test".to_string();
+    let f = e.clone();
+
+    println!("{}",e);
+    println!("{}",f);
+
+    // references in cpp is called borrowing in rust
+    let g = String::from("Reference test");
+    let h = &g;
+
+    println!("{}", g);
+    println!("{}", h);
+
+    // mutable references
+    let mut i = String::from("Mutable Reference test");
+    let j = &mut i;
+    j.push('!');
+
+    println!("{}", j);
+    }