Function square 

pub fn square(num: i32) -> i32

to compute a square of given number

Examples

let x = 2; println!(“square is : {}”, square(x));

output : square is : 4

Tests

let n = 5;
let ans = crate_exp::square(n);
 
assert_eq!(25,ans);

Limitation

only for i32 type integers

Other Details

etc etc