Question: C++ a. Write a program that receives an input from the user, their letter grade (A, B, C, D, F). The program should use switch

C++

a. Write a program that receives an input from the user, their letter grade (A, B, C, D, F). The program should use switch statement and displays a message that corresponds to the grade. Excellent! B Well done Well done D You passed Better try again IL 1 Sample output: Please enter your letter grade: D You passed Your grade is:D b. Write a basic calculator program that reads an equation via keyboard. The first value is an integer, followed by an operator (+,-",1,%) and another integer. Then use a switch to do the following operations. (Hint: pay attention when the denominator is equal to zero in division and modulus operations) . . . '+'for addition (num1 + num2) for subtraction (num1 - num2) *** for multiplication (num1 * num2) 'for division (num1 / num2) '%' for modulus (num1 % num2) A sample run of the program is (user input is indicated as bold): I Welcome to my Calculator Program Enter your calculation: 2 + 3 = 5

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