program a C++ simple calculator using functions. The program should take an arithmetic operator +, -, *, / and two operands from the user. Then, pass them to the required function and performs the calculation.1.Ask the user to enter two numbers (float) and an operator (Char) inside the main2.Create a Function for each operator and pass the numbers to the it. 3.Do the require operation inside the function, return the result to the main. 4.Display the result in the main function.5.Allow the user to repeat the calculation as desire.