Introduction to structs in rust

struct_intro.rs

struct Person{
    name: String,
    age: u32,
}

impl Person{
    fn intro(&self){
        println!("My name is {0} and I am {1} years old", self.name, self.age );
    }
    
    fn age(&self)->u32{
        self.age
    }
    
    fn set_age(&mut self, new_age: u32){
        self.age = new_age;
    }
}

fn main() {
    let mut p = Person{ 
        name: String::from("Eteims"),
        age:23
    };
    
    // introduce person
    p.intro();
    
    // get person's age
    let my_age = p.age();
    println!("age: {my_age}");
    
    // update person's age
    p.set_age(43);
    println!("new age: {}", p.age());
}

/* output:
My name is Eteims and I am 23 years old
age: 23
new age: 43
*/