Write a c++ program that calculate both the sum and the average of 3 numbers using one function and struct. Write a c++

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Write a c++ program that calculate both the sum and theaverage of 3 numbers using one function and struct.
Write a c++ program that manages list of names. There is astructure that enables the user to enter first, middle and lastname. The program should read a list of name, sort the list withrespect to first name and finally, print the sorted list ofnames