Implement a function to find the factorial of a given number iteratively in Rust.

Question

Aryan Kumar · Answer

Sure, here is a Rust function to find the factorial of a given number iteratively in Rust:

Rust

fn factorial(n: i32) -> i32 {
    let mut factorial = 1;
    for i in 1..=n {
        factorial *= i;
    }
    return factorial;
}

fn main() {
    let n = 5;
    let factorial = factorial(n);
    println!("The factorial of {} is {}", n, factorial);
}

This function first defines a function called factorial that takes an i32 number as input and returns the factorial of the number. The function uses an iterative approach to calculate the factorial. The function starts with a factorial of 1. Then, it iterates through the numbers from 1 to n, multiplying the factorial by each number. The final value of the factorial is returned.

The main function of the program then calls the factorial function with the value 5 as input. The result of the function call is then printed to the console.

To run the program, you can save it as a file called factorial.rs and then compile it using the following command:

Code snippet

rustc factorial.rs

Once the program is compiled, you can run it using the following command:

Code snippet

./factorial

This will print the following output to the console:

Code snippet

The factorial of 5 is 120

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Implement a function to find the factorial of a given number iteratively in Rust.

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