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Rust program to calculate the LCM using recursion

Rust | Find LCM using Recursion: Given two numbers, we have to find the LCM using recursion.
Submitted by Nidhi, on October 11, 2021

Problem Solution:

In this program, we will create a recursive function to calculate the LCM and return the result to the calling function.

Program/Source Code:

The source code to calculate the LCM using recursion is given below. The given program is compiled and executed successfully.

// Rust program to calculate the 
// LCM using recursion

unsafe fn LCM(a:i32, b:i32)->i32
{ 
    static mut res:i32 = 1;
 
    if (res % a == 0 && res % b == 0)
    {
        return res;
    }
    res = res + 1;

    LCM(a, b);

    return res;
}

fn main() {
    unsafe{
        let a:i32=45;
        let b:i32=75;
        
        let res = LCM(a, b);
        println!("The LCM of {0} and {1} is {2}.", a, b, res);
    }
}

Output:

The LCM of 45 and 75 is 225.

Explanation:

In the above program, we created two functions LCM() and main(). The LCM() function is a recursive function, which is used to calculate the LCM of two numbers and return the result to the calling function.

In the main() function, we called LCM() function and printed the.

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