Write a function power that takes two parameters: $x($double$)$ and $y($int$),$ and returns the value $x^y$ for integer y $.$ Make sure that your function works correctly. for both positive and negative values of $y.$ Your main function should ask user input for $x$ and $y,$ call power function, and display the result value $x^y.$ Results displayed should have $2$ digits fraction part. DON NOT USE THE MATH POW FUNCTION.

Example $1$: if function parameter x is $2\mathrm{.}5,$ function parameter y is $2,$ then the power function should return the result $6\mathrm{.}25($i$.$e$.,{2\mathrm{.}5}^2)$

Example $2$: if function parameter x is $3,$ function parameter y is $-2,$ then the power function should return the result $0\mathrm{.}11($i$.$e$.,3^{-2})$