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pub mod MathOP {
use std::io;
pub fn takeintegerinput() -> i32
{
    let mut num = String::new();
    io::stdin().read_line(&mut num).expect("Failed to read line");
    let number: i32 = num.trim().parse().ok().expect("Program only 
          processes numbers, Enter Integer number");
    return number;
}

pub fn takefloatinput() -> f32
{
    let mut num = String::new();
    io::stdin().read_line(&mut num).expect("Failed to read line");
    let number: f32 = num.trim().parse().ok().expect("Program only 
          processes numbers, Enter Integer number");
    return number;
}

pub fn takestringinput() -> String
{
    let mut text = String::new();
    io::stdin().read_line(&mut text).expect("Failed to read line");
    return text;
}

pub fn areaofcircle (radius: i32) -> f32
{
    let radiussq = radius*radius;
    let carea=radiussq as f32 * 3.14;
    return carea;

}
pub fn getintsquare(num: i32) ->i32
{
    let sq = num * num;
    return sq;
}
pub fn getfloatsquare(num: f32) -> f32
{
    let sq = num * num;
    return sq;
}

pub fn sumfloatnum(num:f32, num1:f32) -> f32{
    return num + num1;
}

pub fn sumintnum(num:i32, num1:i32) -> i32{
    return num + num1;
}

pub fn subtractfloatnum(num:f32, num1:f32) -> f32{
    return num - num1;
}

pub fn subtractintnum(num:i32, num1:i32) -> i32{
    return num - num1;
}

pub fn multiplyfloatnum(num:f32, num1:f32) -> f32{
    return num * num1;
}
pub fn multiplyintnum(num:i32, num1:i32) -> i32{
    return num * num1;
}
pub fn dividefloatnum(num:f32, num1:f32) -> f32{
    return num / num1;
}
pub fn divideintnum(num:i32, num1:i32) -> i32{
    return num / num1;
}
}

pub use MathOP::takeintegerinput;
pub use MathOP::takefloatinput;
pub use MathOP::takestringinput;
pub use MathOP::areaofcircle;
pub use MathOP::getintsquare;
pub use MathOP::getfloatsquare;
pub use MathOP::sumfloatnum;
pub use MathOP::sumintnum;
pub use MathOP::subtractfloatnum;
pub use MathOP::subtractintnum;
pub use MathOP::multiplyfloatnum;
pub use MathOP::multiplyintnum;
pub use MathOP::dividefloatnum;
pub use MathOP::divideintnum;