Random Number Generator in Rust

To generate a random number in Rust, you typically use the rand crate, which is a popular choice for random number generation. First, ensure you have the rand crate included in your Cargo.toml file:


                                
                // cargo.toml
                [dependencies]
                rand = "0.8.4"
                
                // the code:
                use rand::Rng; // Rng trait defines methods for random number generation
                
                fn main() {
                    let mut rng = rand::thread_rng(); // Get a random number generator
                    let random_number: i32 = rng.gen_range(1..=10); // Generate a random number between 1 and 10, inclusive
                    println!("Random number: {}", random_number);
                }

In this example:

rand::Rng trait is imported, which provides the gen_range method.
rand::thread_rng() provides a random number generator local to the current thread of execution and seeded by the operating system.
gen_range(1..=10) generates a random integer in the range [1, 10], including both endpoints.
Make sure to add the rand crate to your Cargo.toml to use it in your project.