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Rust program to swap two bytes of a number

Here, we are going to learn how to swap two bytes of a number in Rust programming language?
Submitted by Nidhi, on September 24, 2021

Problem Solution:

Here, we will create a 16-bit integer number and then we will swap bytes of the given number and print the result.

Program/Source Code:

The source code to swap two bytes of a number is given below. The given program is compiled and executed successfully.

// Rust program to swap two bytes of a number.

fn main()
{
    let mut num:u16 = 0x1234;

    println!("Number before swapping bytes is: {:#02x}", num);
    
    num = ((num << 8) & 0xff00) | ((num >> 8) & 0x00ff);
    
    println!("Number after swapping bytes is: {:#02x}", num);
}

Output:

Number before swapping bytes is: 0x1234
Number after swapping bytes is: 0x3412

Explanation:

Here, we created a 16-bit integer variable num with an initial value of 0x1234. Then we swapped bytes of the number using bitwise operators and printed the result.

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