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pub mod Calculator_functions{
   pub mod basic_function{
        pub fn add(x:u32,y:u32)->u32{
            x+y
        }
        pub fn sub(x:u32,y:u32) ->u32{
            x-y
        }
        pub fn divide(x:u32 , y:u32)->u32{
            x/y
        }
        pub fn multiply(x:u32 , y:u32)->u32{
            x*y
        }   
    }
   pub mod Power_functions{
        pub fn square(x:u32) -> u32{
            x*x
        }
        pub fn cube(x:u32) -> u32{
           x*x*x
        }
        pub fn power(x:u32,y:u32) -> u32{
            let mut ans = x;
            for i in 1..y{
             ans = ans*x;

           }
           ans
        }
    }
}