Multi Part question for c++ and yes I'll rate you up thank youu! ^^

Part A: Define a struct for a Circle with a radius, circumference, area.

Then define an array with 10 Circles.

Input the radius for each circle from the user (and also set its circumference, area).

Then output the area of the largest circle in the array.

Part B :

Write a function that takes as input a string from the user.

Then it checks if the string is a palindrome.

A palindrome is a string that is the same forwards and backwards.

The code outputs "yes it is a palindrome" or "not a palindrome".

Part C :

Write a program that takes as input 2 strings from the user. Then it determines if one string is a permutation of the other string.

Part D :

If the program answers "yes" to the previous question, meaning the two strings are permutations of each other, determine if each string has all unique characters