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pub mod calculator_functions {
    pub mod basic_functions {
        pub fn add(x:i32,y:i32)->i32 {
            x+y
        }

        pub fn subtract(x:i32,y:i32)->i32 {
            x-y
        }

        pub fn divide(x:i32,y:i32)->i32{
            x/y
        }

       pub  fn multiply(x:i32,y:i32)->i32{
            x*y
          }
        }
      }

       pub mod power_functions {
        pub fn square(x:i32)->i32 {
            x*x
        }

        pub fn cube(y:i32)->i32 {
            y*y*y
        }

        pub fn power_function1(num : u32,exp: u32)->u32 {
          

            u32::pow(num,exp)
        }
    }