Write a C++ program using to display the sum of all numbers between 1 and 100. 2. Write a C++ program to display a multiplication table of a given integer number. 3. Write a C++ program using a switch statement that accepts grades like A, B, C, D, E, and F and displays text as shown below: A Outstanding BExcellent C Very Good D Good E Fair FaPoor Use the switch...case structure to write a C++ program that accepts a currency out of any five international currencies and coverts it to the local currency. Choose any five international currencies and the local currency must be AED. s Use the switch...case structure to write a CH+ program using C++ that compute the areas of the following shapes: Square Circle Right-angled triangle Rectangle Sphere Ask the user to enter a code for the shape first and then based on the selection, ask for the required attributes such as sides or radius etc. 6. Using the switch...case structure to design a restaurant biller system where a user can input a choice of dish and the quantity, and the system generates the bill. Choose any 5 items of your choice with relevant codes for the items e.g. B for Burger, S for Sandwich etc. The bill must be calculated using the formula: Bill = Unit price * Quantity + 5% VAT