Write a $C++$ program that prompts the user to enter a letter grade $($Excellent$,$Very Good, Good, Fair, or Fail$)$ and then uses a switch statement to display the corresponding meaning of the grade.

Explain the two main ways of passing arguments to functions in C$++$: pass$-$by$-$value and pass$-$by$-$reference. Discuss the advantages and disadvantages of each method.

Write a program that calculates the area of a square by defining two function

Write a program that calculates the area of a rectangle by defining two function

Write a program that prompts the user to enter a number and then prints the multiplication table for that number. Use a for loop to iterate through the numbers $1$ to $10$ and multiply them by the entered number.

Write a program that takes a positive integer $n$ from the user and then prints the following pattern using asterisks $(**)$ :