G Define an enumeration type triangleType that has the values scalene, isosceles, equilateral, and noTriangle. Write a function triangleShape that takes as parameters three numbers, each of which represents the length of a side of the triangle. The function should return the shape of the triangle. (Note: In a triangle, the sum of the lengths of any two sides is greater than the length of the third side.) Write a program that prompts the user to input the length of the sides of a triangle and outputs the shape of the triangle.