Trying to write a C# program, everytime l try and run it it fails and says they are errors.Below screenshot is for the problem Write a program to calculate electricity charges for a customer. The program requests a name, previous meter reading and current meter reading. The difference in the two readings gives the number of units of electricity used. The customer pays a fixed charge of $25. In addition to the fixed charge, 20 cents is charged for each unit used. Print all the data, the number of units used and the amount the customer must pay, appropriately labelled.   Additional information: You may assume that the current meter reading is larger than or equat to the previous meter reading. You may assume all data entered into your program is correct

Chapter 5. PC #2. Retail Price Calculator (page 312) Write a program that asks the user to enter an item’s wholesale cost and its markup percentage. It should then display the item’s retail price. For example: • If an item’s wholesale cost is 5.00 and its markup percentage is 100 percent, then the item’s retail price is 10.00. • If an item’s wholesale cost is 5.00 and its markup percentage is 50 percent, then the item’s retail price is 7.50. The program should have a method named calculateRetail that receives the wholesale cost and the markup percentage as arguments, and returns the retail price of the item. Class name: RetailPriceCalculator   Here is a code: please modify this code so it works in Hypergrade when I submit it so it passes all the test casses in Hypergrade. It has to pass all the test casses in Hypergrade becausw when I submit the code in Hypercase it does not run and it says 0 out of 5 casses passed. Please fix this code. I do not need thanks for playing or…

The Nim game. Write a program for a two-player version of the game Nim: a human player will play against the computer. The game is simple: players take turns removing from 1 to 4 sticks from a pile of 13 sticks; the player who picks up the last stick wins the game. Here’s some pseudocode for the Nim game. Start by initializing some variables that will allow you to keep track of the state of the game: One variable should record how many sticks there are left in the pile; initially, this variable must be initialized to 13. There are two players in the game, who take turns. To remember who’s turn is next, use a variable with two states (= values). Say the variable is 1 if the human player is next, and it is 2, if the computer’s turn is next. Pick randomly the player who should start the game. Then, start the main loop of the game: the game should continue for as long as there still are sticks (at least one) to pick. In each repetition of the game loop, one player will play their turn:…

Chapter 5. PC #2. Retail Price Calculator (page 312) Write a program that asks the user to enter an item’s wholesale cost and its markup percentage. It should then display the item’s retail price. For example: • If an item’s wholesale cost is 5.00 and its markup percentage is 100 percent, then the item’s retail price is 10.00. • If an item’s wholesale cost is 5.00 and its markup percentage is 50 percent, then the item’s retail price is 7.50. The program should have a method named calculateRetail that receives the wholesale cost and the markup percentage as arguments, and returns the retail price of the item. Class name: RetailPriceCalculator Here is a working code but please fix it so it will in Hypergrade which as all the test casses. I DO NOT NEED THANK YOU IN THE PROGRAM. IT HAS TO PASS ALL THE TEST CASSES PLEASE. THANK YOU!!!!!: import java.util.*;class RetailPriceCalculator{    // creating a method    public static double calculateRetail(double wholesale,double…