Rust program to create a closure function to return the addition of given numbers

Program/Source Code:

The source code to create a closure function to return the addition of given numbers is given below. The given program is compiled and executed on UBUNTU 18.04 successfully.

// Rust program to create a closure function 
// to return addition of given numbers

fn main() {
    let num1 = 10;
    let num2 = 21;
    
    let sum = |n1,n2|
    {
        n1+n2
    };
    
    println!("Addition is: {:?}",sum(num1,num2));
}

Output:

Addition is: 31

Explanation:

Here, we created two integer variables num1, num2 initialized with 10, 21 respectively. Then we created a closure function sum with parameters "n1" and "n2". In the closure, we returned the addition of given parameters to the calling function.