c# coding question:

Compute ex where ex= 1 + x/1! + x2/2! + x3/3! + ... ...+ xn/n! + ... and n! = n(n-1)(n-2)... ...1, the product of the integers from 1 to n. (We pronounce the expression n! as n factorial.) Let the user input the value of x, of type double. Continue adding terms until the difference of successive terms is less than 1.0 E-6. Compare your answer with the C# method Math.Exp(x). (Hint: Compute each term from the previous one. For example, the fourth term is x/3 times the third term.)