# Rust program to find the square root of the given number

Given a number, we have to find its square root.
Submitted by Nidhi, on September 28, 2021

Problem Solution:

Here, we will read the number from the user. Then we will calculate the square root of a given number using the sqrt() function and print the result.

Program/Source Code:

The source code to find the square root of the given number is given below. The given program is compiled and executed successfully.

```// Rust program to find the
// square root of given number

use std::io;

fn main() {
let mut n:f32 = 0.0;
let mut res:f32 = 0.0;

let mut input = String::new();

println!("Enter number: ");
n = input.trim().parse().expect("Not a valid number");

res = n.sqrt();

println!("Square root is: {}",res);
}
```

Output:

```RUN 1:
Enter number:
36
Square root is: 6

RUN 2:
Enter number:
18
Square root is: 4.2426405

RUN 3:
Enter number:
-1
Square root is: NaN
```

Explanation:

Here, we read the number from the user. Then we calculated the square root of a given number using the sqrt() function and printed the result.