Question: Program 2 . 3 from the e - textbook illustrates a C + + program calculating the sum from two numbers entered by the user

Program 2.3 from the e-textbook illustrates a C++ program calculating the sum from two numbers entered by the user via keyboard.
Rewrite the program according to the following:
Declared three variables (each with different data types such as int, doble, and float and different numeric values).
Calculate the average of these three numbers and display the output.

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