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Rust program to declare and implement a trait

Rust | Generics Example: Write a program to declare and implement a trait.
Last Updated : November 23, 2021

Problem Statement

In this program, we will create a structure and implement a trait to print student information.

Program/Source Code

The source code to declare and implement a trait is given below. The given program is compiled and executed on UBUNTU 18.04 successfully.

// Rust program to declare and implement a trait

struct Student {
   id:u32,
   name:&'static str,
   fee:u32
   
}

//declare a trait
trait PrintStudent {
   fn print(&self);
}

//implement the trait
impl PrintStudent for Student {
   fn print(&self){
      println!("Student id   : {}",self.id  );
      println!("Student name : {}",self.name);
      println!("Student fee  : {}",self.fee );
   }
}

fn main()
{
   let stu = Student {
      id:1001,
      name:"Rahul",
      fee:5000
   };
   stu.print();
}

Output

Student id   : 1001
Student name : Rahul
Student fee  : 5000

Explanation

In the above program, we created a structure Student which is given below,

struct Student {
   id:u32,
   name:&'static str,
   fee:u32
}

After that, we implemented a trait to print student information.

In the main() function, we created the object of the structure Student and initialized it with student information. After that, we printed the student information.

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