In c++

You are a tired professor and need help determining the final grades at the end of your C++ Programming course. You decide to write a program that converts a numerical grade into a letter grade and GPA. Specifications: You must use a switch statement to solve the problem. Prompt the user to enter a numerical grade (assume that it is an integer). Then use the following scales to determine the final letter grade and GPA: Print an error message if the grade is larger than 100 or less than 0 If you execute the program with the following underlined inputs, the output will be main.o Welcome to the Grade Calculation Program Enter Numerical Grade: -67 Error: Invalid Numerical Grade main.o Welcome to the Grade Calculation Program Enter Numerical Grade: 88 Letter Grade: B GPA: 3.0